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JP-7856622-B2 - Surgical saw system

JP7856622B2JP 7856622 B2JP7856622 B2JP 7856622B2JP-7856622-B2

Inventors

  • カール，ジェフリー
  • カーヴ，ギリシュ
  • キングマン，アマンダ

Assignees

  • ストライカー・コーポレイション

Dates

Publication Date
20260511
Application Date
20231106
Priority Date
20180727

Claims (13)

  1. A surgical saw system (20) used with surgical saw blades (24, 24', 24''), Electric handpiece (22), A blade attachment connected to the aforementioned electric handpiece (22), A heat sink connected to the blade mounting fixture (28) for removing heat from the surgical saw blade by heat conduction , wherein the heat sink is positioned on and integrated with the blade mounting fixture and is formed as a component independent of the surgical saw blade (24, 24', 24''), comprising a heat sink (32, 32'), A surgical saw system (20) equipped with the following.
  2. The surgical saw system (20) according to claim 1, wherein the heat sink (32) is a passive heat sink (32).
  3. The surgical saw system (20) according to claim 1, wherein the heat sink (32) is a passive heat sink (32) comprising a plurality of cooling fins (74) extending from a heat sink base (76), and the heat sink base is connected to the blade mounting fixture (28).
  4. The surgical saw system (20) according to claim 1, wherein the heat sink (32') is an active heat sink (32') disposed on the blade mounting fixture .
  5. The surgical saw system (20) according to claim 1, wherein the heat sink (32') is an electrically operable heat sink (32').
  6. The surgical saw system (20) according to claim 3 , further comprising a fan positioned to blow air across the plurality of cooling fins (74) of the heat sink (32, 32').
  7. The surgical saw system (20) according to claim 4, further comprising a control device electrically connected to the heat sink and a temperature sensor, wherein the temperature sensor is connected to the blade mounting fixture and configured to transmit a feedback signal to the control device .
  8. The blade mounting fixture further comprises surgical saw blades (24, 24', 24'') connected to the blade mounting fixture , and the surgical saw blades (24, 24', 24'') are A cutting edge (42, 42') having multiple teeth (44, 44'), wherein the cutting edge (42, 42') is substantially formed entirely from a first material having a first thermal conductivity, A proximal portion (34, 34', 34'') comprising a blade hub (30, 30') , wherein the blade hub is configured to connect the surgical saw blade (24, 24', 24'') to the heat sink , A body portion (46, 46', 46'') is positioned between the cutting edge (42, 42') and the proximal portion (34, 34', 34'') and connects the cutting edge (42, 42') and the proximal portion (34, 34', 34'') to each other, and is a heat transfer core (56, 56', 56A', 56B', 56'') formed from a second material having a second thermal conductivity at least twice that of the first thermal conductivity, wherein the core (56, 56', 56A', 56B' A heat transfer core (56, 56', 56A', 56B', 56'') having two longitudinally extending first core surfaces (57, 57A', 57B', 57'') on opposite sides that extend across the width of the 56'', and a main body portion (46, 46', 46'') comprising two longitudinally extending side members (58, 58') on opposite sides, respectively, positioned on the longitudinally extending first core surfaces (57, 57A', 57B', 57'', Equipped with, The blade mounting fixture (28) is configured to receive the blade hub (30, 30'), is connected to the saw handpiece (22), and has a heat sink (32, 32'), according to any one of claims 1 to 7 , the surgical saw system (20).
  9. The surgical saw system (20) according to claim 8 , wherein the heat transfer cores (56, 56', 56A', 56B', 56'') are substantially made of copper.
  10. The surgical saw system (20) according to claim 8 , wherein the cutting edge (42, 42') is formed of steel, and the proximal portion (34, 34', 34'') is also substantially entirely formed of steel.
  11. The surgical saw system (20) according to claim 8 , wherein the cutting edges (42, 42') are positioned at the distal end of the blade (24, 24', 24''), and the cutting edges (42, 42') are formed of steel.
  12. The cutting edge (42, 42') is located at the distal end of the saw blade (24, 24', 24'') opposite the blade hub (30, 30'), The main body portion (46, 46', 46'') has a length exceeding half the length of the saw blade (24, 24', 24''), The surgical saw system (20) according to claim 8, wherein the surgical saw blade (24, 24', 24'') comprising the proximal portion (34, 34', 34''), the cutting edge (42, 42'), and the body portion ( 46 , 46', 46'') is substantially planar and has substantially constant thickness.
  13. The surgical saw system (20) according to any one of claims 8 to 12 , wherein the heat transfer core (56, 56', 56A', 56B', 56'') is substantially made of aluminum.

Description

[Cross-reference of related applications] This application claims priority and gains from U.S. Provisional Patent Application No. 62/703,944, filed on 27 July 2018, the contents of which are incorporated herein by reference in their entirety. Electric surgical saw systems with surgical saw blades are used to remove tissues including bone and cartilage during surgical procedures. Electric surgical saw systems with surgical saw blades are beneficial to surgeons performing orthopedic surgery. However, there is a need for improved surgical saw blades and surgical saw systems that promote improved surgical precision and efficiency. The disclosed saw blade features a thermally conductive core, which advantageously enables cutting at lower blade temperatures than known blades. The blade temperature can be further reduced by using an auxiliary heat sink located in the blade mount. The surgical saw blade comprises a cutting edge, a proximal portion, and a body portion. The cutting edge has multiple teeth and is substantially entirely formed from a first material having a first thermal conductivity. The proximal portion is equipped with a blade hub. The main body portion is positioned between the cutting edge and the proximal portion and connects the cutting edge and the proximal portion to each other. The main body portion has a first thermal conductivity of at least 2 The device comprises a heat transfer core formed from a second material having twice the second thermal conductivity. The core has at least two first longitudinal sections extending across the width of the core on opposite sides. It has a core surface. The main body portion comprises at least two longitudinally extending first side members on opposite sides, each positioned on a first core surface that extends in the longitudinal direction. The cutting edge may be made of steel, and the longitudinally extending side members may also be made of steel. The cutting edge may be made of steel, and the proximal portion may also be substantially entirely made of steel. The cutting edge may be located at the distal end of the blade. The cutting edge may be formed from steel. The cutting edge may be located at the distal end of the blade. The saw blade may be substantially symmetrical with respect to a long axis extending from the blade hub to the teeth. To provide side members, steel sheets may be arranged to cover the first and second surfaces of the heat transfer core. The cutting edge may be made of steel. A pair of second side members on opposite sides may also be made of steel. The second side members may be connected to the first side members and extend along each of the two opposite second heat transfer core surfaces that extend across the thickness of the heat transfer core. The cutting edge may be located at the distal end of the saw blade opposite the blade hub. The body portion may have a length exceeding half the length of the saw blade. The surgical saw blade, comprising the proximal portion, the cutting edge, and the body portion, may be substantially flat and may have substantially constant thickness. The heat transfer core may be substantially composed of copper. The heat transfer core may be substantially composed of aluminum. A surgical saw blade thermal management system comprises a surgical saw blade and a blade mount. The surgical saw blade comprises a cutting edge, a proximal portion, and a body portion. The cutting edge has multiple teeth and is substantially entirely formed from a first material having a first thermal conductivity. The proximal portion comprises a blade hub. The body portion is positioned between the cutting edge and the proximal portion, connecting the cutting edge and the proximal portion to each other, and comprises a heat transfer core formed from a second material. The second material has a second thermal conductivity at least twice that of the first thermal conductivity. The heat transfer core has at least two longitudinally extending first core surfaces that extend across the width of the core and are on opposite sides. The body portion comprises at least two longitudinally extending side members positioned on the longitudinally extending first core surfaces. The blade mount is configured to receive the blade hub of the blade and is connected to a saw handpiece. The blade mount comprises a heat sink. The heatsink may be a passive heatsink. The heatsink may be an active heatsink. The heatsink may be an electrically operated, active heatsink. The system's heat transfer core may be substantially composed of copper. The heat transfer core may be substantially composed of copper. A method for manufacturing a surgical saw blade includes the steps of forming layers of a blank sheet assembly, forming a blank sheet assembly, cutting out a plurality of saw blade blanks, forming a blade hub, and forming the incisors. The blank sheet assembly comprises a substantially planar first steel sheet, a substantially planar second