Orthopedic guider with adjustable length

Abstract

The utility model relates to the field of medical instruments, in particular to a length-adjustable orthopedic guider which comprises a handle, a guide pipe arranged at one end of the handle in a penetrating mode and a control assembly for controlling the length, extending out of the handle, of the guide pipe. The control assembly is connected with the end, located in the handle, of the guide pipe. The control assembly comprises a push rod installed in the length direction of the handle and a button arranged on the portion, located in the handle, of the push rod in a sleeving mode, one end of the button penetrates through the handle, a limiting part is arranged on the overlapped portion of the button and the push rod, and the limiting part controls the extension length, facing the guide pipe, of the push rod. And the state of the extended guide pipe is fixed. The length of the orthopedic guider can be controlled according to complex and changeable operation requirements.

Description

Technical Field

[0001] The present application relates to the field of medical devices, and in particular to an orthopedic guide with adjustable length. Background Art

[0002] In the knock-in anchor implantation surgery, the orthopedic guide is a medical device that cooperates with the depth-limiting drill to drill holes on the bone surface and at the same time limits the drilling depth. The functions and uses of the orthopedic guide mainly include: guiding bone cutting, assisting bone positioning, guiding bone suturing, and improving surgical accuracy. In joint replacement surgery, the guide can help doctors cut and remove the diseased joint part and provide a precise bone surface for the implantation of the prosthesis. In fracture reduction and fixation surgery, the guide can guide the doctor to correctly reduce the bone and fix it in the normal position. The orthopedic guide can also provide accurate positioning and guidance during bone suturing to ensure that the bones are correctly connected together. The orthopedic guide can provide more accurate surgical cutting and positioning, reduce the errors and risks of surgical operations, reduce surgical time and trauma, and improve the success rate of surgery and the patient's rehabilitation effect.

[0003] When the length of the depth-limiting drill bit is constant, the length of the orthopedic guide determines the drilling depth, and the drilling depth determines the implantation depth of the anchor, which is crucial in surgery. The existing orthopedic guide includes a handle with a through hole, and one end of the handle is connected to a guide tube; when drilling, the end close to the guide tube is against the bone surface, and the bone drill connected to the hand drill is inserted from the end of the handle away from the guide tube, and then enters the guide tube to drill a hole on the bone surface.

[0004] Hole depth is crucial for anchor implantation and can directly affect the safety and reliability of implantation. When the length of the depth-limited drill bit is fixed, the length of the orthopedic guide determines the drilling depth. Existing orthopedic guides are mostly fixed in length and cannot meet the doctor's requirements for the depth of drilling holes on the bone surface during complex and changeable surgeries. Utility Model Content

[0005] In order to control the length of the orthopedic guide according to complex and changing surgical requirements, the present application provides an orthopedic guide with adjustable length.

[0006] The present application provides a length-adjustable orthopedic guide, which adopts the following technical solution:

[0007] A length-adjustable orthopedic guide comprises: a handle, a guide tube passing through one end of the handle, and a control component for controlling the length of the guide tube extending out of the handle, wherein the control component is arranged in the handle and connected to one end of the guide tube located in the handle;

[0008] The control component includes a push rod installed along the length direction of the handle, and a button which is sleeved on the part of the push rod located inside the handle and one end of which passes through the handle. A limiting portion is provided at the overlapping portion of the button and the push rod. The limiting portion controls the extension length of the push rod toward the guide tube and fixes the state of the guide tube after extension.

[0009] By adopting the above technical solution, during the operation, when the length of the orthopedic guide needs to be adjusted, the button is pressed and the push rod is moved. The length of the guide tube is controlled by controlling the push rod, and the button cooperates with the limit part to fix the extended or shortened state of the guide tube to prevent the guide tube with the adjusted length from sliding.

[0010] Preferably, the limiting portion is provided with a plurality of limiting grooves, and the bottom of the button is provided with a protrusion for snapping into one or more grooves. After pressing the button, the protrusion moves away from the limiting groove, and when adjusted to the required length, the protrusion is partially or completely located in the limiting groove.

[0011] By adopting the above technical solution, when the protrusion is clamped in the groove, the length of the guide tube is fixed. When the protrusion is away from the groove, the guide tube can slide to adjust the length. After adjusting to the required length, the protrusion is clamped in the groove to fix it.

[0012] Preferably, the plurality of limiting grooves are evenly arranged, and the size of each limiting groove is different or the same, and one or more protrusions are provided. When a plurality of protrusions are provided, each two adjacent protrusions are correspondingly embedded in each two adjacent limiting grooves.

[0013] By adopting the above technical solution, a plurality of limiting grooves are evenly arranged, so that the guide tube can be adjusted to multiple positions according to a fixed length during adjustment.

[0014] Preferably, a pressing space for pressing the button is provided inside the handle and below the button, and the pressing space is arranged along the diameter of the handle. The protrusion at the bottom of the button moves toward or away from the limiting groove according to the range of movement of the button in the pressing space.

[0015] By adopting the above technical solution, when in use, the button is pressed to move the button toward the bottom of the pressing space. At this time, the raised portion at the bottom of the button leaves the limiting groove, and the push rod is moved to move the guide tube. After the length is adjusted, the button is adjusted so that the raised portion at the bottom of the button is stuck in the limiting groove, thereby fixing the guide tube.

[0016] Preferably, a return spring is provided in the pressing space, and when the return spring is in a compressed state, the raised portion at the bottom of the button is separated from the outer wall of the push rod, and when the return spring is in a released state, the raised portion at the bottom of the button is clamped in the limiting groove.

[0017] By adopting the above technical solution, under normal conditions, the protrusion at the bottom of the button is stuck in the groove of the push rod under the elastic force of the spring and is automatically locked.

[0018] Preferably, a handle is provided at one end of the push rod located outside the handle, the handle is a pancake-shaped structure, and one end of the push rod is fixedly connected to the center of the handle.

[0019] By adopting the above technical solution, the handle is more convenient to use when pushing or pulling the push rod.

[0020] Preferably, an air path is opened at the center of the push rod, and the air path passes through the handle and is connected to the outside.

[0021] By adopting the above technical solution, it is prevented that the push rod is difficult to pull out due to the effect of air pressure.

[0022] Preferably, a guide sleeve is provided on the outside of the guide tube, and an end portion of the guide sleeve close to the push rod is located inside the handle.

[0023] By adopting the above technical solution, the guide sleeve plays a protective role on the guide tube.

[0024] Preferably, one end of the guide sleeve is fixedly connected to the handle, and the push rod slides in the guide sleeve.

[0025] By adopting the above technical solution, the guide tube slides in the guide sleeve to avoid contact with the outside.

[0026] Preferably, a top screw is passed through the handle, and a limiting groove is provided on the outside of the push rod for sliding one end of the top screw, and the width of the limiting groove is adapted to the diameter of one end of the top screw.

[0027] By adopting the above technical solution, the top screw plays a role in preventing the push rod from rotating.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. During the operation, when the length of the orthopedic guide needs to be adjusted, press the button and move the push rod to control the length of the guide tube. The button cooperates with the limit part to fix the extended or shortened state of the guide tube to prevent the guide tube with adjusted length from sliding.

[0030] 2. When in use, press the button to move it toward the bottom of the pressing space. At this time, the raised part at the bottom of the button leaves the limiting groove, and the push rod is moved to move the guide tube. After the length is adjusted, adjust the button so that the raised part at the bottom of the button is stuck in the limiting groove, thereby fixing the guide tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of an orthopedic guide with adjustable length in an embodiment of the present application;

[0032] Figure 2 It is a schematic diagram of the cross-sectional structure of an orthopedic guide with adjustable length.

[0033] Explanation of the reference numerals: 1. handle; 2. guide tube; 21. guide sleeve; 3. control assembly; 31. push rod; 311. handle; 312. air path; 32. button; 321. pressing space; 322. return spring; 33. limiting portion; 331. limiting groove; 332. protrusion; 4. top screw. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-2 This application is described in further detail.

[0035] The embodiment of the present application discloses a length-adjustable orthopedic guide. Figure 1 and Figure 2 The length-adjustable orthopedic guide comprises a handle 1, a guide tube 2 inserted at one end of the handle 1, and a control component 3 for controlling the length of the guide tube 2 extending out of the handle 1. The control component 3 is arranged in the handle 1 and connected to one end of the guide tube 2 located in the handle 1. The control component 3 comprises a push rod 31 installed along the length direction of the handle 1, and a button 32 which is sleeved at the part of the push rod 31 located in the handle 1 and one end of which passes through the handle 1. A limiting portion 33 is provided at the overlapping part of the button 32 and the push rod 31. The limiting portion 33 controls the extension length of the push rod 31 toward the guide tube 2 and fixes the state of the guide tube 2 after extension. During the operation, when the length of the orthopedic guide needs to be adjusted, the button 32 is pressed to move the push rod 31, and the length of the guide tube 2 is controlled by controlling the push rod 31. The button 32 cooperates with the limiting portion 33 to fix the state of the guide tube 2 after extension or shortening, thereby preventing the slide of the guide tube 2 whose length has been adjusted.

[0036] In an optional embodiment, the limiting portion 33 is provided with a plurality of limiting grooves 331, and a protrusion 332 for snapping into one or more grooves is provided at the bottom of the button 32. After pressing the button 32, the protrusion 332 moves away from the limiting groove 331. When the length is adjusted to the required length, the protrusion 332 is partially or completely located in the limiting groove 331. When the protrusion 332 is snapped into the groove, the length of the guide tube 2 is fixed. When the protrusion 332 moves away from the groove, the guide tube 2 can slide to adjust the length. When the length is adjusted to the required length, the protrusion 332 is snapped into the groove to fix it. In an optional embodiment, the sizes of the plurality of limiting grooves 331 are the same or different. In a preferred embodiment, the sizes of the plurality of limiting grooves 331 are the same, and the plurality of limiting grooves 331 are evenly arranged, and the plurality of limiting grooves 331 divide the limiting portion 33 into equal parts.

[0037] In an optional embodiment, a plurality of limiting grooves 331 are evenly arranged, and the sizes of each limiting groove 331 are different or the same. One or more protrusions 332 are provided. When a plurality of protrusions 332 are provided, each two adjacent protrusions 332 are correspondingly embedded in each two adjacent limiting grooves 331. The plurality of limiting grooves 331 are evenly arranged, so that the guide tube 2 can be adjusted to multiple gears according to a fixed length when adjusting. In an optional embodiment, one protrusion 332 is provided, and the size and dimension of a single protrusion 332 are the same as the size of a single limiting groove 331, and the protrusion 332 can be snapped into the limiting groove 331. In an optional embodiment, two protrusions 332 are provided, and the two protrusions 332 are arranged adjacent to each other. The two protrusions 332 may correspond to two adjacent limiting grooves 331. Optionally, the two protrusions 332 are provided corresponding to two spaced-apart limiting grooves 331. When the two protrusions 332 correspond to two spaced-apart limiting grooves 331, the two protrusions 332 may be clamped together in the limiting groove 331, or one of the protrusions 332 may be located in the limiting groove.

[0038] In an optional embodiment, three protrusions 332 are provided, and the three protrusions 332 are arranged adjacent to each other. The three protrusions 332 may correspond to three continuous limiting grooves 331. Optionally, the three protrusions 332 are arranged continuously and / or at intervals. When the three protrusions 332 correspond to three spaced limiting grooves 331 or three continuous limiting grooves 331, the three protrusions 332 may be clamped together in the limiting grooves 331, or two protrusions 332 may be clamped in the limiting grooves 331, or one protrusion 332 may be clamped in the limiting grooves 331. In a preferred embodiment, a single protrusion 332 corresponds to a plurality of limiting grooves 331 of the same size and arranged evenly. The push rod 31 may be adjusted to multiple gears according to the actual surgical conditions, and the guide tube 2 may be adjusted to multiple gears.

[0039] In an optional embodiment, a pressing space 321 for the button 32 to press is provided inside the handle 1 and below the button 32. The pressing space 321 is arranged along the diameter of the handle 1. The protrusion at the bottom of the button 32 moves toward or away from the limiting groove 331 according to the range of movement of the button 32 in the pressing space 321. When in use, the button 32 is pressed to move the button 32 toward the bottom of the pressing space 321. At this time, the protrusion 332 at the bottom of the button 32 leaves the limiting groove 331, and the push rod 31 is moved to move the guide tube 2. After the length is adjusted, the button 32 is adjusted so that the protrusion 332 at the bottom of the button 32 is inserted into the limiting groove 331, thereby fixing the guide tube 2.

[0040] In a preferred embodiment, a return spring 322 is provided in the pressing space 321. When the return spring 322 is in a compressed state, the protrusion 332 at the bottom of the button 32 is separated from the outer wall of the push rod 31. When the return spring 322 is in a released state, the protrusion 332 at the bottom of the button 32 is clamped in the limiting groove 331. Under normal conditions, the protrusion at the bottom of the button 32 is clamped in the groove of the push rod 31 under the elastic force of the spring and is automatically locked. In an optional embodiment, a handle 311 is provided at one end of the push rod 31 located outside the handle 1. The handle 311 is a pancake-shaped structure. One end of the push rod 31 is fixed to the center of the handle 311. The handle 311 is used to make it more convenient to push and pull the push rod 31. In a preferred embodiment, an air path 312 is opened at the center of the push rod 31. The air path 312 passes through the handle 311 and is connected to the outside to prevent the push rod 31 from being difficult to pull due to air pressure. In an optional embodiment, a guide sleeve 21 is provided on the outside of the guide tube 2 , and an end portion of the guide sleeve 21 close to the push rod 31 is located in the handle 1 , and the guide sleeve 21 protects the guide tube 2 .

[0041] In a preferred embodiment, one end of the guide sleeve 21 is fixed in the handle 1, the push rod 31 slides in the guide sleeve 21, and the guide tube 2 slides in the guide sleeve 21 to avoid contact with the outside. In an optional embodiment, the handle 1 is also provided with a top screw 4, and the push rod 31 is provided with a limit groove for sliding one end of the top screw 4. The width of the limit groove is adapted to the diameter of one end of the top screw 4, and the top screw 4 prevents the push rod 31 from rotating.

[0042] The implementation principle of the embodiment of the present application is as follows: the present length-adjustable orthopedic guide solution is mainly composed of a handle 1 and a guide tube 2. The handle 1 is composed of a handle 1 body, a push rod 31, a button 32, a compression spring, and a top screw 4. The push rod 31 is provided with a plurality of grooves, and a protrusion is provided at the bottom of the button 32. Under normal circumstances, the protrusion at the bottom of the button 32 is stuck in the groove of the push rod 31 under the elastic force of the spring, and is automatically locked to limit the axial movement of the push rod 31. The top screw 4 prevents the push rod 31 from rotating. When the button 32 is pressed, the protrusion at the bottom of the button 32 moves downward and disengages from the groove of the push rod 31. At this time, the push rod 31 can be pushed or pulled to adjust the length of the guide. After releasing the button 32, the protrusion at the bottom of the button 32 is stuck in the groove of the push rod 31 again under the elastic force of the spring, thereby realizing multi-gear adjustment.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A length-adjustable orthopedic guide, characterized in that: include: A handle (1), a guide tube (2) passing through one end of the handle (1), and a control component (3) for controlling the length of the guide tube (2) extending out of the handle (1), wherein the control component (3) is arranged in the handle (1) and connected to one end of the guide tube (2) located in the handle (1); The control assembly (3) comprises a push rod (31) installed along the length direction of the handle (1), and a button (32) which is sleeved on the part of the push rod (31) located inside the handle (1) and one end of which passes through the handle (1). A limiting portion (33) is provided at the overlapping portion of the button (32) and the push rod (31). The limiting portion (33) controls the extension length of the push rod (31) toward the guide tube (2) and fixes the state of the guide tube (2) after extension.

2. The length-adjustable orthopedic guide according to claim 1, characterized in that: The limiting portion (33) is provided with a plurality of limiting grooves (331); the bottom of the button (32) is provided with a protrusion (332) for being engaged in one or more grooves; after the button (32) is pressed, the protrusion (332) moves away from the limiting groove (331); after the desired length is adjusted, part or all of the protrusion (332) is located in the limiting groove (331).

3. The length-adjustable orthopedic guide according to claim 2, characterized in that: The plurality of limiting grooves (331) are evenly arranged, and the size of each limiting groove (331) is different or the same, and one or more protrusions (332) are arranged. When a plurality of protrusions (332) are arranged, each two adjacent protrusions (332) are correspondingly embedded in each two adjacent limiting grooves (331).

4. The length-adjustable orthopedic guide according to claim 2, characterized in that: A pressing space (321) for the button (32) to be pressed is provided inside the handle (1) and below the button (32); the pressing space (321) is arranged along the diameter of the handle (1); and a protrusion at the bottom of the button (32) moves towards or away from the limiting groove (331) according to the range of movement of the button (32) in the pressing space (321).

5. The length-adjustable orthopedic guide according to claim 4, characterized in that: A return spring (322) is arranged in the pressing space (321); when the return spring (322) is in a compressed state, the protrusion (332) at the bottom of the button (32) is separated from the outer wall of the push rod (31); when the return spring (322) is in a released state, the protrusion (332) at the bottom of the button (32) is clamped in the limiting groove (331).

6. The length-adjustable orthopedic guide according to claim 1, characterized in that: A handle (311) is provided at one end of the push rod (31) located outside the handle (1); the handle (311) is a pancake-shaped structure; one end of the push rod (31) is fixedly connected to the center of the handle (311).

7. The length-adjustable orthopedic guide according to claim 6, characterized in that: An air path (312) is provided at the center of the push rod (31), and the air path (312) passes through the handle (311) and is connected to the outside.

8. The length-adjustable orthopedic guide according to claim 1, characterized in that: The guide tube (2) is externally sleeved with a guide sleeve (21), and an end portion of the guide sleeve (21) close to the push rod (31) is located inside the handle (1).

9. The length-adjustable orthopedic guide according to claim 8, characterized in that: One end of the guide sleeve (21) is fixedly connected to the handle (1), and the push rod (31) slides in the guide sleeve (21).

10. The length-adjustable orthopedic guide according to claim 1, characterized in that: The handle (1) is also provided with a top screw (4), and the push rod (31) is provided with a limiting groove on the outside for one end of the top screw (4) to slide, and the width of the limiting groove is adapted to the diameter of one end of the top screw (4).

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