Patents by Inventor Gursharan Singh Chana
Gursharan Singh Chana has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11617661Abstract: The invention provides a targeting device suitable for use in removing a femoral implant from the surrounding tissue, wherein the device comprises: (A) an anterior guide member (1), (B) a posterior guide member (4), (C) an engagement member (7), (D) a first pair of parallel connector rails (509, 510), and (E) an adjustment system (13). When the anterior guide member and the posterior guide member are connected by the first pair of connector rails, via the engagement member, the angled channels of the anterior guide member and the posterior guide member converge in the direction of a distal end, with the convergence angle of the angled channels being in the range of from 2 to 6 degrees, such as from 2 to 5 degrees.Type: GrantFiled: May 28, 2019Date of Patent: April 4, 2023Inventor: Gursharan Singh Chana
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Publication number: 20210196478Abstract: The invention provides a targeting device suitable for use in removing a femoral implant from the surrounding tissue, wherein the device comprises: (A) an anterior guide member (1), (B) a posterior guide member (4), (C) an engagement member (7), (D) a first pair of parallel connector rails (509, 510), and (E) an adjustment system (13). When the anterior guide member and the posterior guide member are connected by the first pair of connector rails, via the engagement member, the angled channels of the anterior guide member and the posterior guide member converge in the direction of a distal end, with the convergence angle of the angled channels being in the range of from 2 to 6 degrees, such as from 2 to 5 degrees.Type: ApplicationFiled: May 28, 2019Publication date: July 1, 2021Inventor: Gursharan Singh Chana
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Patent number: 10987115Abstract: A targeting kit comprises (i) a mounting arrangement for releasably mounting the targeting kit on an implant, (ii) first and second guide members having an elongate shape with a bore running along its longitudinal axis (iii) a holding arrangement for holding the first and second guide members, the holding arrangement being adjustable between a release condition, in which the positions of the first and second guide members are adjustable, and a holding condition, in which the first and second guide members are in a fixed position, and (iv) a bridging arrangement between the mounting arrangement and the first and second guide members, to space the first and second guide members with respect to the mounting arrangement, the bridging arrangement being adjustable between a release condition, in which the position of the mounting arrangement is adjustable, and a holding condition, in which the first and second guide members are fixedly spaced.Type: GrantFiled: August 22, 2016Date of Patent: April 27, 2021Inventor: Gursharan Singh Chana
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Publication number: 20180250021Abstract: A targeting kit comprises (i) a mounting arrangement for releasably mounting the targeting kit on an implant, (ii) first and second guide members having an elongate shape with a bore running along its longitudinal axis (iii) a holding arrangement for holding the first and second guide members, the holding arrangement being adjustable between a release condition, in which the positions of the first and second guide members are adjustable, and a holding condition, in which the first and second guide members are in a fixed position, and (iv) a bridging arrangement between the mounting arrangement and the first and second guide members, to space the first and second guide members with respect to the mounting arrangement, the bridging arrangement being adjustable between a release condition, in which the position of the mounting arrangement is adjustable, and a holding condition, in which the first and second guide members are fixedly spaced.Type: ApplicationFiled: August 22, 2016Publication date: September 6, 2018Inventor: Gursharan Singh Chana
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Patent number: 9700328Abstract: A drill guide comprises a mounting arrangement for mounting the drill guide on an article. The drill guide further includes first and second guide arrangements and a holding arrangement for holding the first and second drill guides. The holding arrangement is adjustable between a release position in which the positions of the first and second guide arrangements are adjustable relative to the holding arrangement and a holding position in which the first and second guide arrangements are held by the holding arrangement in a fixed position.Type: GrantFiled: October 14, 2010Date of Patent: July 11, 2017Assignee: Comis Orthopaedics LimitedInventor: Gursharan Singh Chana
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Patent number: 9259330Abstract: A surgical positioning apparatus (400) comprises a surgical positioning device (412) and a levelling device (422). The surgical positioning device (412) comprises a securing assembly (416), a locating arrangement (418) securable to the securing assembly in a selected position of the locating arrangement, and an indicating arrangement (420) securable to the securing assembly in a selected position of the Indicating arrangement. The locating arrangement (418) comprises a locating member (432) to locate the positioning device in a desired orientation relative to a first article. The indicating arrangement (420) comprises an indicating member (488) to indicate the position of a second article relative to the first article. The levelling device (422) can be mounted on the surgical positioning device (412) to facilitate orientation of the surgical positioning device relative to the vertical.Type: GrantFiled: February 2, 2011Date of Patent: February 16, 2016Inventor: Gursharan Singh Chana
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Publication number: 20140135781Abstract: A drill guide comprises a mounting arrangement for mounting the drill guide on an article. The drill guide further includes first and second guide arrangements and a holding arrangement for holding the first and second drill guides. The holding arrangement is adjustable between a release position in which the positions of the first and second guide arrangements are adjustable relative to the holding arrangement and a holding position in which the first and second guide arrangements are held by the holding arrangement in a fixed position.Type: ApplicationFiled: October 14, 2010Publication date: May 15, 2014Applicant: COMIS ORTHOPAEDICS LIMITEDInventor: Gursharan Singh Chana
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Publication number: 20130066322Abstract: A surgical positioning apparatus (400) comprises a surgical positioning device (412) and a levelling device (422). The surgical positioning device (412) comprises a securing assembly (416), a locating arrangement (418) securable to the securing assembly in a selected position of the locating arrangement, and an indicating arrangement (420) securable to the securing assembly in a selected position of the indicating arrangement. The locating arrangement (418) comprises a locating member (432) to locate the positioning device in a desired orientation relative to a first article. The indicating arrangement (420) comprises an indicating member (488) to indicate the position of a second article relative to the first article. The levelling device (422) can be mounted on the surgical positioning device (412) to facilitate orientation of the surgical positioning device relative to the vertical.Type: ApplicationFiled: February 2, 2011Publication date: March 14, 2013Inventor: Gursharan Singh Chana
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Publication number: 20120303131Abstract: A single use cutting jig for use in cutting a bone in orthopaedic surgery, the cutting jig having: a first face shaped to receive the end of the bone to be cut, a second face provided with one or more cutting slot, the or each slot extending through the cutting jig from the second face to the first face and being shaped for receiving a cutting device, wherein the cutting jig is molded from plastic, and wherein the interior surface of the or each cutting slot is provided with a metal coating.Type: ApplicationFiled: December 9, 2010Publication date: November 29, 2012Inventor: Gursharan Singh Chana
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Patent number: 7819875Abstract: A surgical device for holding and rotating an acetabular reaming head is provided, comprising a shaft having a length which runs from a first end adapted for holding an acetabular reaming head to a second end. At least part of the shaft is divergent from the axis defined by the first and second ends of the shaft, for example the shaft may include a C-shaped divergent portion. A head held by the device can therefore access the acetabular in its true anatomical position while avoiding encroachment of the shaft on surrounding body parts.Type: GrantFiled: February 7, 2003Date of Patent: October 26, 2010Inventor: Gursharan Singh Chana
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Publication number: 20100249857Abstract: A surgical apparatus (10) comprises a manipulating portion (12), a delivery portion (14) spaced longitudinally from the manipulating portion, and a connecting portion (16) connecting the manipulating portion to the delivery portion. The connecting portion extends laterally from the delivery portion. The surgical apparatus further includes a securing arrangement (28) for releasably securing a surgical member to the delivery portion.Type: ApplicationFiled: September 4, 2007Publication date: September 30, 2010Inventors: Gursharan Singh Chana, Christopher John Sloss
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Publication number: 20100160916Abstract: A cutting device (11) comprises a cutting head (14) of substantially circular cross-section, the cutting head having a main axis (X), and a distal cutting edge (23). The cutting edge has a first cutter. The cutting head (14) has a cutting portion (21) and a second cutter extending inwardly of the cutting portion. The second cutter (26) comprises a plurality of spaced cutting members (32) arranged in an array around the main axis. Each cutting member has a substantially planar cutting surface (32A) extending substantially parallel to, and offset from, the main axis.Type: ApplicationFiled: September 25, 2007Publication date: June 24, 2010Inventors: Gursharan Singh Chana, Christopher John Sloss
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Publication number: 20100030116Abstract: A targeting device (20) for use in hip surgery to allow the position of the centreline of the femoral neck to be located, the device comprising: (a) one or more location sensor device (22a, 22b, 23a, 23b), wherein at least part of each location sensor device is movable to a position inside the body that is over the femoral neck, the device or devices being suitable for obtaining data relating to the location of the surface of the femoral neck with respect to a reference position, in both the anterior-posterior and superior-inferior planes; (b) a guide sleeve (32), having a bore capable of receiving a guide wire; and (c) a computer device with software for receiving data from the location sensor device or devices and processing this data so as to determine the location of the centreline of the femoral neck; wherein the guide sleeve can be moved in the anterior, posterior, medial and lateral directions, so that it can be moved so as to be in line with the centreline of the femoral neck as determined by the compType: ApplicationFiled: September 19, 2007Publication date: February 4, 2010Inventor: Gursharan Singh Chana
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Publication number: 20090264710Abstract: A surgical apparatus (10) comprises a support member (12), and first and second mounting arrangements (26, 28) for mounting respective first and second retractors (22, 24) mounted on the support member. The mounting arrangements are mounted on the support member, and at least the first mounting arrangement is movable towards and away from the second mounting arrangement.Type: ApplicationFiled: April 30, 2007Publication date: October 22, 2009Applicant: COMIS ORTHOPAEDICS LIMITEDInventors: Gursharan Singh Chana, Christopher John Sloss
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Publication number: 20090062802Abstract: A cutting apparatus comprises a flexible elongate cutting member, and a tensioning arrangement to maintain the flexible elongate member in a tensioned condition. The tensioning arrangement comprises a carrying arrangement on which the flexible elongate member is arranged. The cutting apparatus further includes a driving arrangement to move the carrying arrangement, thereby causing the flexible elongate member to move and effect cutting of an article.Type: ApplicationFiled: June 30, 2008Publication date: March 5, 2009Applicant: COMIS ORTHOPAEDICS LIMITEDInventors: Shaun Palmer, Gursharan Singh Chana
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Publication number: 20080125785Abstract: A targeting device for use in hip surgery and more particularly for use in hip replacement surgery or hip resurfacing surgery, which may include minimally invasive surgery. An exemplary embodiment of the targeting device comprises one or more sensor devices, a guide sleeve, a guide sleeve location adjustor, and a computer device with software for receiving data from the sensor device or devices and processing this data so as to determine the location of the centerline of the femoral neck. In other embodiments, the sensor devices are movable so as to obtain data at two or more different radial locations around the femoral neck or angularly spaced in order to obtain data in the anterior-posterior plane and in the superior-inferior plane. Moreover, the sensor devices can be placed on retractable arms.Type: ApplicationFiled: September 25, 2006Publication date: May 29, 2008Inventor: Gursharan Singh Chana