Anti-admission bone grafting tool

Abstract

The utility model discloses an anti-admission bone grafting tool which comprises a bone grafting channel pipe, a bone grafting funnel and a bone grafting bar assembly, the bone grafting bar assembly comprises a bone grafting pushing section and a bone grafting connecting section, a plurality of exhaust channels are arranged on the periphery of the bone grafting pushing section and the periphery of the bone grafting connecting section, the two ends of each exhaust channel are open, and the two ends of each exhaust channel are open. One end of the exhaust channel extends to the outer end of the bone grafting pushing section, and the other end of the exhaust channel extends to the outer end of the bone grafting connecting section. The utility model has the beneficial effects that in the process that the bone grafting pushing section pushes bone grafting bone particles along the interior of the bone grafting channel pipe, the exhaust channel is arranged, so that compressed gas can be discharged outwards in an airflow manner, and the gas is prevented from being compressed and pushed into a bone grafting position in the bone grafting process; therefore, the bone grafting particles can be compactly pressed at the bone grafting position, complications caused by air inflation in the femoral head are avoided, and the bone grafting operation risk can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of orthopedic tools, and particularly relates to a bone grafting tool with airproof function. BACKGROUND

[0002] The treatment of femoral head necrosis is one of common and refractory diseases in orthopedics, although artificial joint replacement has made great progress, the service life of artificial joint is 10-20 years, but even in the most ideal case (four generations of ceramic joints with a service life of 30 years), it is impossible to ensure that the artificial joint of young patients can be used for life, and total hip replacement is only a choice for late treatment, so hip preservation treatment is particularly important.

[0003] In the hip preservation treatment scheme, bone grafting surgery is a surgical method for preserving the femoral head, bone grafting treatment is a common surgical treatment method for femoral head avascular necrosis, which is suitable for young patients with early femoral head necrosis, and bone grafting treatment can be divided into vascular pedicle bone grafting and non-vascular pedicle bone grafting, and the non-vascular pedicle bone grafting is relatively simple, easy to operate, and more widely used in clinic, and its purpose is to reduce the internal pressure of the bone, provide structural support for the subchondral bone and articular cartilage, and improve the late deformity of the collapsed femoral head.

[0004] Specifically in the operation process of bone grafting surgery, a windowing tool is needed to perform femoral neck windowing operation on the dislocated femoral head, and then a bone knife is used to remove and trim the necrotic part, and then a bone grafting tool is used to send the bone grafting bone into the femoral head windowing position, and in the use of the bone grafting tool, the existing bone grafting tool usually includes a bone grafting funnel, a bone grafting channel pipe and a bone grafting rod, and in use, the bone grafting bone particles are sent into the bone grafting channel through the bone grafting funnel, and then the bone grafting rod is inserted into the bone grafting channel pipe to push the bone grafting bone particles to the bone grafting position.

[0005] However, in the design of the existing bone grafting tool, in order to ensure that the bone grafting bone particles can be smoothly pushed by the bone grafting rod, the front end of the bone grafting rod is usually matched with the bone grafting channel pipe in a sliding tight fit manner, which inevitably compresses and pushes the gas into the bone grafting position during the pushing of the bone grafting bone particles in the bone grafting channel pipe, which not only affects the compactness of the bone grafting bone particles in the bone grafting position, but also easily causes complications such as internal gas of the femoral head due to the failure to discharge the gas in time, resulting in certain risks in the bone grafting process. INNOVATION CONTENT

[0006] The utility model discloses a purpose is in order to solve above -mentioned problem and provide a kind of air intake prevention bone graft tool, in the process of pushing bone graft granules in bone graft pushing section along bone graft channel pipe inside, the setting of exhaust passage can let the gas of push compression be discharged to outside in the form of airflow, avoid the gas compression push into bone graft position in bone graft process, ensure that bone graft granules can be densely pressed in bone graft position, see the elaboration below.

[0007] To achieve the above object, the utility model provides the following technical scheme:

[0008] The utility model provides a kind of air intake prevention bone graft tool, including bone graft channel pipe, bone graft hopper and bone graft stick component, the axis of bone graft channel pipe is along transverse arrangement, both ends of bone graft channel pipe are open and one end coaxially detachable combination has anti-disengagement component, bone graft channel pipe periphery is fixedly connected with the bone graft hopper for adding bone graft granules to bone graft channel pipe in the end position close to the anti-disengagement component;

[0009] The bone graft stick component includes bone graft pushing section and bone graft connecting section, and the bone graft pushing section and the bone graft connecting section are coaxially fixed together, the outer diameter of the bone graft connecting section is less than the outer diameter of the bone graft pushing section, and the periphery of the bone graft pushing section and the inner periphery of the bone graft channel pipe are coaxially slidingly and tightly matched.

[0010] The periphery of the bone graft pushing section and the bone graft connecting section is provided with a plurality of exhaust passages, both ends of the exhaust passage are open, and one end of the exhaust passage extends to the outer end of the bone graft pushing section, and the other end of the exhaust passage extends to the outer end of the bone graft connecting section.

[0011] As a preferred, the outer end of the bone graft connecting section is coaxially detachable combined with a handle for convenient holding.

[0012] As a preferred, the same exhaust passage of the bone graft pushing section and the bone graft connecting section is continuous in length direction, and the exhaust passage is linear or curved.

[0013] As a preferred, the cross-sectional shape of the exhaust passage is crescent, half-hem type hole type or rectangular.

[0014] As a preferred, the number of exhaust passages is four and is uniformly distributed in the circumferential direction.

[0015] As a preferred, the width size of the exhaust passage end opening is less than 2mm.

[0016] As a preferred, the anti-disengagement assembly comprises a fixed boss and a matching sleeve, the fixed boss is coaxially fixed to the periphery of the end of the bone graft pushing section, the periphery of the fixed boss is radially extended and fixed with a clamping rod, the matching sleeve is coaxially sleeved on the periphery of the fixed boss in a sliding fit manner, the surface of the matching sleeve is provided with a clamping groove capable of being detachably clamped with the clamping rod, and the outer end of the matching sleeve is coaxially fixed with an anti-disengagement cap capable of coaxially passing through the bone graft connecting section but incapable of coaxially passing through the bone graft pushing section.

[0017] As a preferred, the clamping groove comprises a straight groove section along the axial direction of the matching sleeve and an inclined groove section along the circumferential direction of the matching sleeve, the straight groove section of the clamping groove is open at the port position, and the straight groove section and the inclined groove section of the clamping groove are smoothly connected with each other.

[0018] As a preferred, the inner periphery diameter of the anti-disengagement cap is greater than the outer periphery diameter of the bone graft connecting section but smaller than the outer periphery diameter of the bone graft pushing section.

[0019] The bone grafting tool has the advantages that: 1. The bone grafting tool has a plurality of exhaust channels arranged on the outer periphery of the bone grafting pushing segment and the bone grafting connecting segment of the bone grafting rod assembly, and one end of the exhaust channel extends to the outer end of the bone grafting pushing segment, and the other end of the exhaust channel extends to the outer end of the bone grafting connecting segment, so that the compressed gas is discharged outward in the form of airflow when the bone grafting pushing segment pushes the bone grafting bone particles in the bone grafting channel pipe, the gas is prevented from being compressed and pushed into the bone grafting position during the bone grafting process, the bone grafting bone particles can be densely pressed in the bone grafting position, complications caused by air filling in the femoral head are avoided, and the bone grafting operation risk is reduced;

[0020] The bone grafting tool has the advantages that: 1. The bone grafting tool has a plurality of exhaust channels arranged on the outer periphery of the bone grafting pushing segment and the bone grafting connecting segment of the bone grafting rod assembly, and one end of the exhaust channel extends to the outer end of the bone grafting pushing segment, and the other end of the exhaust channel extends to the outer end of the bone grafting connecting segment, so that the compressed gas is discharged outward in the form of airflow when the bone grafting pushing segment pushes the bone grafting bone particles in the bone grafting channel pipe, the gas is prevented from being compressed and pushed into the bone grafting position during the bone grafting process, the bone grafting bone particles can be densely pressed in the bone grafting position, complications caused by air filling in the femoral head are avoided, and the bone grafting operation risk is reduced;

[0021] 2、The rear end of the bone graft channel pipe is coaxially combined with the anti-disengagement assembly, the fixing boss and the matching sleeve of the anti-disengagement assembly are coaxially located at the periphery of the bone graft channel pipe and the periphery of the bone graft connecting section respectively, the bone graft connecting section passes through the anti-disengagement cap in a coaxial sliding fit manner, but the bone graft pushing section cannot pass through the anti-disengagement cap, after the clamping rod of the fixing boss and the clamping groove of the matching sleeve are dislocatedly clamped, the setting of the anti-disengagement cap can prevent the bone graft pushing section from being accidentally disengaged from the bone graft channel pipe during backward pulling, so that the bone graft rod assembly can be reciprocally pushed multiple times during the bone graft operation, and it is ensured that the bone graft rod assembly and the bone graft channel pipe can be smoothly used after single combination to the completion of the bone graft operation;

[0022] 3、Only the clamping rod of the fixing boss and the clamping groove of the matching sleeve are separated, the bone graft rod assembly and the bone graft channel pipe can be separated from each other, and then the bone graft rod assembly and the bone graft channel pipe can be separated in time after the bone graft operation is completed, so that thorough cleaning and maintenance can be performed. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0024] Figure 1 is the overall schematic diagram of the present application in the separated state Figure 1 ;

[0025] Figure 2 is the overall schematic diagram of the present application in the separated state Figure 2 ;

[0026] Figure 3 is the overall schematic diagram of the present application in the combined state

[0027] Figure 4 is the front view schematic diagram of the present application Figure 1 ;

[0028] Figure 5 is the left view schematic diagram of the present application Figure 1 ;

[0029] Figure 6 is the top view schematic diagram of the present application Figure 1 .

[0030] The following is the explanation of the reference signs:

[0031] 1, bone graft channel pipe; 2, bone graft funnel; 3, anti-separation assembly; 301, clamping groove; 302, matching sleeve; 303, clamping rod; 304, fixing boss; 305, anti-separation cap; 4, handle; 5, exhaust passage; 6, bone graft rod assembly; 601, bone graft connecting section; 602, bone graft pushing section. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the utility model clearer, the technical scheme of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope protected by the utility model.

[0033] Referring to Figures 1-6 The utility model provides a kind of bone graft tool of preventing air intake, including bone graft channel pipe 1, bone graft funnel 2 and bone graft rod assembly 6, the axis of bone graft channel pipe 1 is along transverse arrangement, bone graft channel pipe 1 both ends are open and one end coaxially detachable combination has anti-separation assembly 3, bone graft channel pipe 1 periphery is fixedly connected with bone graft funnel 2 for adding bone graft bone particles to bone graft channel pipe 1 in the end position close to anti-separation assembly 3, specifically, anti-separation assembly 3 includes fixing boss 304 and matching sleeve 302, the end periphery of bone graft channel pipe 1 away from bone graft pushing section 602 is coaxially fixed with fixed boss 304, and the periphery of fixed boss 304 is fixed with clamping rod 303 along radial direction, matching sleeve 302 is sleeved on the periphery of fixed boss 304 in the manner of coaxial sliding fit, and the surface of matching sleeve 302 is provided with clamping groove 301 that can be detachably connected with clamping rod 303, and the outer end of matching sleeve 302 is coaxially fixed with anti-separation cap 305 that can make bone graft connecting section 601 pass through coaxially while bone graft pushing section 602 cannot pass through coaxially, the purpose of this arrangement is that, first, after the clamping groove 301 of matching sleeve 302 and the clamping rod 303 of fixed boss 304 are misaligned and connected, the anti-separation cap 305 can prevent the bone graft pushing section 602 from accidentally separating from the bone graft channel pipe 1 during backward pulling, so that the bone graft rod assembly 6 can be pushed back and forth multiple times during bone graft operation, ensuring that the bone graft rod assembly 6 and the bone graft channel pipe 1 can be used smoothly after single combination, and the bone graft rod assembly 6 and the bone graft channel pipe 1 can be separated from each other after the clamping groove 301 of matching sleeve 302 and the clamping rod 303 of fixed boss 304 are separated, so that the bone graft rod assembly 6 and the bone graft channel pipe 1 can be separated in time after bone graft operation for thorough cleaning and maintenance.

[0034] It should be noted that the clamping groove 301 of the matching sleeve 302 should be pre-assembled on the outer periphery of the bone graft connecting section 601 before being clamped with the clamping rod 303 of the fixing boss 304. The matching sleeve 302 can be smoothly combined and separated with the bone graft connecting section 601 by pre-removing the handle 4.

[0035] Referring to Figures 1-3 As shown in the drawings, the bone graft rod assembly 6 comprises a bone graft pushing section 602 and a bone graft connecting section 601, and the bone graft pushing section 602 and the bone graft connecting section 601 are coaxially and fixedly connected together. The outer diameter of the bone graft connecting section 601 is smaller than the outer diameter of the bone graft pushing section 602. The outer periphery of the bone graft pushing section 602 is in close sliding fit with the inner periphery of the bone graft channel pipe 1. The outer periphery of the bone graft pushing section 602 and the bone graft connecting section 601 is provided with a plurality of exhaust channels 5. Both ends of the exhaust channel 5 are open. One end of the exhaust channel 5 extends to the outer end of the bone graft pushing section 602, and the other end of the exhaust channel 5 extends to the outer end of the bone graft connecting section 601. The setting of the exhaust channel 5 can make the compressed gas be discharged outward in the form of air flow during the process of pushing the bone graft particles along the inside of the bone graft channel pipe 1, so as to avoid the compressed gas being pushed into the bone graft position, and ensure that the bone graft particles can be densely pressed on the bone graft position. At the same time, the setting of the exhaust channel 5 can also avoid the complications caused by the inflation in the femoral head.

[0036] Referring to Figures 1-3As shown, the bone graft rod assembly 6, the exhaust passage 5 and the anti-disengagement assembly 3 are respectively optimized as follows. Specifically to the bone graft rod assembly 6, the outer end of the bone graft connecting section 601 coaxially detachably combines with the handle 4 for convenient holding, so that the handle 4 can be quickly combined and separated with the bone graft connecting section 601, thus ensuring that the matching sleeve 302 can be smoothly set in advance on the bone graft connecting section 601. Specifically to the exhaust passage 5, the same exhaust passage 5 of the bone graft pushing section 602 and the bone graft connecting section 601 is continuous in the length direction, and the exhaust passage 5 is linear or curved, so that the continuous exhaust passage 5 can smoothly guide the air flow to be exhausted, and simultaneously, the cross-sectional shape of the exhaust passage 5 can be crescent, half-hem shape or rectangular, the number of the exhaust passage 5 is four and is uniformly distributed in the circumferential direction, so that the exhaust passage 5 can have various shapes and number specifications, thereby facilitating the flexible setting of the exhaust passage 5 on the periphery of the bone graft rod assembly 6 according to the actual use needs. Further, the width of the end opening of the exhaust passage 5 is less than 2mm, and the reason for this setting is that the bone graft particles are usually red bean-shaped and the size is usually 2mm x 2mm or 2mm x 3mm during the bone grafting process of the femoral head, so that by limiting the size of the end opening of the exhaust passage 5, the bone graft particles can be prevented from accidentally entering the exhaust passage 5 during the pushing process, thereby avoiding the loss of bone graft particles and the blockage of the exhaust passage 5.

[0037] Specifically to the anti-disengagement assembly 3, the clamping groove 301 includes a straight groove section along the axial direction of the matching sleeve 302 and a slanted groove section along the circumferential direction of the matching sleeve 302, the straight groove section of the clamping groove 301 is open at the port position, and the straight groove section and the slanted groove section of the clamping groove 301 are smoothly connected to each other, so that the matching sleeve 302 can be smoothly sleeved on the periphery of the fixed boss 304 by moving the clamping rod 303 along the straight groove section of the clamping groove 301, and the clamping rod 303 can be clamped into the slanted groove section of the clamping groove 301 by rotating the matching sleeve 302, thereby realizing the dislocation clamping of the matching sleeve 302 on the periphery of the fixed boss 304. When disassembling, the clamping rod 303 is separated from the slanted groove section of the clamping groove 301 and enters the straight groove section of the clamping groove 301 by twisting the matching sleeve 302, and then the clamping rod 303 slides along the straight groove section of the clamping groove 301 and separates from the end opening, thereby completing the disassembly of the matching sleeve 302 and the fixed boss 304. Meanwhile, the inner diameter of the anti-disengagement cap 305 is greater than the outer diameter of the bone graft connecting section 601 but less than the outer diameter of the bone graft pushing section 602, so that the bone graft connecting section 601 can pass through the anti-disengagement cap 305 coaxially, but the bone graft pushing section 602 cannot pass through the anti-disengagement cap 305 coaxially.

[0038] With the above structure, specifically in the process of bone grafting operation, when the bone grafting tool is used to send the bone grafting bone particles to the bone grafting position, because a plurality of exhaust channels 5 are arranged on the outer periphery of the bone grafting pushing section 602 and the bone grafting connecting section 601 of the bone grafting rod assembly 6, and one end of the exhaust channel 5 extends to the outer end of the bone grafting pushing section 602, and the other end of the exhaust channel 5 extends to the outer end of the bone grafting connecting section 601, then the bone grafting pushing section 602 is first pulled out to the inner end and limited by the anti-disengagement cap 305, then the bone grafting bone particles are sent into the bone grafting channel pipe 1 through the bone grafting funnel 2, and then the end of the bone grafting channel pipe 1 is inserted into the bone grafting position of the femoral head, and then the handle 4 is pushed to drive the bone grafting rod assembly 6, and in the process of pushing the bone grafting bone particles in the bone grafting channel pipe 1 by the bone grafting pushing section 602, the compressed gas is discharged outward in the form of airflow through the arrangement of the exhaust channel 5, which avoids the compression of the gas into the bone grafting position during the bone grafting process, ensures that the bone grafting bone particles can be densely compressed in the bone grafting position, and also avoids the complications caused by the inflation in the femoral head, which is beneficial to reduce the risk of bone grafting operation, and because the rear end of the bone grafting channel pipe 1 is coaxially combined with the anti-disengagement assembly 3, and the fixed protrusion 304 and the matching sleeve 302 of the anti-disengagement assembly 3 are coaxially arranged on the outer periphery of the bone grafting channel pipe 1 and the outer periphery of the bone grafting connecting section 601 respectively, and the bone grafting connecting section 601 passes through the anti-disengagement cap 305 in the form of coaxial sliding fit but the bone grafting pushing section 602 cannot pass through the anti-disengagement cap 305, and then after the clamping rod 303 of the fixed protrusion 304 and the clamping groove 301 of the matching sleeve 302 are dislocatedly clamped, the arrangement of the anti-disengagement cap 305 can prevent the bone grafting pushing section 602 from being accidentally disengaged from the bone grafting channel pipe 1 during the backward pulling process, so that the bone grafting rod assembly 6 can be repeatedly pushed and used during the bone grafting operation, and the bone grafting rod assembly 6 and the bone grafting channel pipe 1 can be smoothly used after single combination, and the bone grafting rod assembly 6 and the bone grafting channel pipe 1 can be disengaged from each other after the clamping rod 303 of the fixed protrusion 304 and the clamping groove 301 of the matching sleeve 302 are separated, so that the bone grafting rod assembly 6 and the bone grafting channel pipe 1 can be separated in time after the bone grafting operation is completed, and thorough cleaning and maintenance can be carried out.

[0039] The above is only a specific implementation manner of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An air entry preventing bone grafting tool comprising a bone grafting channel tube (1), a bone grafting funnel (2) and a bone grafting rod assembly (6), characterized in that: The axis of the bone grafting channel pipe (1) is arranged in the transverse direction, both ends of the bone grafting channel pipe (1) are open, and the end coaxially and detachably combined with the anti-disengagement assembly (3), the outer periphery of the bone grafting channel pipe (1) is fixedly connected with the bone grafting funnel (2) for adding bone graft particles to the bone grafting channel pipe (1) at the end position close to the anti-disengagement assembly (3); The bone grafting rod assembly (6) comprises a bone grafting pushing section (602) and a bone grafting connecting section (601), and the bone grafting pushing section (602) and the bone grafting connecting section (601) are coaxially and fixedly connected together, the outer diameter of the bone grafting connecting section (601) is smaller than the outer diameter of the bone grafting pushing section (602), and the outer periphery of the bone grafting pushing section (602) is in close sliding fit with the inner periphery of the bone grafting channel pipe (1); The outer periphery of the bone grafting pushing section (602) and the bone grafting connecting section (601) is provided with a plurality of exhaust channels (5), both ends of the exhaust channel (5) are open, and one end of the exhaust channel (5) extends to the outer end of the bone grafting pushing section (602), and the other end of the exhaust channel (5) extends to the outer end of the bone grafting connecting section (601).

2. The tool according to claim 1, wherein: The outer end of the bone grafting connecting section (601) is coaxially and detachably combined with the handle (4) for convenient holding.

3. The tool of claim 1, wherein: The same exhaust channel (5) of the bone grafting pushing section (602) and the bone grafting connecting section (601) is continuous in the length direction, and the exhaust channel (5) is linear or curved.

4. The tool of claim 3, wherein: The cross-sectional shape of the exhaust channel (5) is crescent-shaped, half-hem-shaped or rectangular.

5. The tool of claim 3, wherein: The number of the exhaust channels (5) is four and is uniformly distributed in the circumferential direction.

6. The tool of claim 3, wherein: The width dimension of the end opening of the exhaust channel (5) is less than 2mm.

7. The tool according to any one of claims 1 to 6, wherein: The anti-disengagement assembly (3) comprises a fixed boss (304) and a matching sleeve (302), the outer periphery of the end of the bone grafting channel pipe (1) away from the bone grafting pushing section (602) is coaxially and fixedly connected with the fixed boss (304), the outer periphery of the fixed boss (304) is radially extended and fixed with a clamping rod (303), the matching sleeve (302) is coaxially and slidingly fitted on the outer periphery of the fixed boss (304), the surface of the matching sleeve (302) is provided with a clamping groove (301) capable of being detachably clamped with the clamping rod (303), and the outer end of the matching sleeve (302) is coaxially fixed with an anti-disengagement cap (305) capable of allowing the bone grafting connecting section (601) to pass through coaxially and the bone grafting pushing section (602) to pass through coaxially.

8. The tool of claim 7, wherein: The clamping groove (301) comprises a straight groove section in the axial direction of the matching sleeve (302) and a inclined groove section in the circumferential direction of the matching sleeve (302), the straight groove section of the clamping groove (301) is open at the port position, and the straight groove section and the inclined groove section of the clamping groove (301) are smoothly connected with each other.

9. The tool of claim 8, wherein: The inner diameter of the anti-disengagement cap (305) is greater than the outer diameter of the bone grafting connecting section (601) but less than the outer diameter of the bone grafting pushing section (602).

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