Bone transplantation device for ankle joint

Abstract

The utility model discloses a bone transplant device for ankle joint, comprising a guide tube and a feeding tube; the feeding tube is arranged at one end of the guide tube away from the gripping portion, the feeding tube is provided with a feeding channel connected with the guide channel, a plurality of scale grooves are arranged on the outer wall of the feeding tube, and a placement hole is arranged at one end of the feeding tube close to the guide tube; when the bone graft is placed into the feeding tube, the bone graft in the feeding channel can be observed through the feeding tube; the amount of the bone graft inserted can be conveniently observed by the setting of the scale groove, so as to facilitate the operation of the assistant and the accurate amount of insertion under the microscope by the medical staff, the setting of the push rod can assist the scale groove in pushing out the placement of the bone graft, the setting of the guide tube can ensure the installation and storage of the push rod, and the setting of the guide tube can form an effect of accommodating and regularly placing the bone graft.

Description

Technical Field

[0001] The utility model relates to the technical field of bone grafting instruments, and more specifically, it relates to a bone grafting device for the ankle joint. Background Art

[0002] The ankle joint is composed of the articular surfaces at the lower ends of the tibia and fibula and the trochlea of the talus, so it is also known as the talocrural joint. The lower articular surface of the tibia and the medial and lateral ankle articular surfaces together form a "冂"-shaped articular fossa that accommodates the trochlea of the talus (articular head). Since the trochlear articular surface is wider in the front and narrower in the back, when the foot is dorsiflexed, the wider front part enters the fossa and the joint is stable; but when the foot is plantarflexed, such as when walking downhill, the narrower rear part of the trochlea enters the fossa, the ankle joint is loose and can move laterally, and at this time the ankle joint is prone to sprains, among which inversion injuries are the most common, because the lateral malleolus is longer and lower than the medial malleolus, which can prevent excessive eversion of the talus.

[0003] The ankle joint is the weight-bearing joint closest to the ground in the human body and also the joint with the most weight-bearing in the whole body. The stability of the ankle joint plays an important role in daily life; the trochlea of the talus is an important weight-bearing part and often suffers from osteochondral injuries, which seriously affect the normal activities of patients. Osteochondral injury of the talus is a common ankle joint cartilage injury. Due to various factors, the articular cartilage at the trochlea of the talus becomes detached and exfoliated, etc., and at the same time, the ankle joint will experience weakness, soreness, cystic changes, etc. Clinically, conservative treatment, arthroscopic minimally invasive joint surface remodeling and other surgical treatments are mainly adopted, and talus joint bone grafting is an important step in arthroscopic surgery for treating talus cartilage injury. Due to the limitations of arthroscopic surgical instruments, the current bone grafting instruments are inconvenient to use for bone grafting under minimally invasive conditions and cannot accurately know the amount of bone graft filled. Content of the Utility Model

[0004] The purpose of the utility model is to provide a bone grafting device for the ankle joint, a bone grafting device that can accurately know the amount of bone graft filled.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: A bone grafting device for the ankle joint includes a guide tube and a feeding tube.

[0006] A guide channel is arranged in the guide tube, a push rod that can move axially along the channel is arranged in the channel, a holding part is arranged at one end of the guide tube, a guide groove communicated with the guide channel is opened on the outer side wall of the guide tube, a ball head rod is arranged on the side wall of the push rod near the holding part, at least part of the ball head rod is placed outside the guide tube, and the ball head rod is located in the guide groove;

[0007] The feeding tube is arranged at one end of the guide tube away from the gripping part, the feeding tube is provided with a feeding channel connected with the guide channel, a plurality of scale grooves are arranged on the outer wall of the feeding tube, and a placement hole is arranged at one end of the feeding tube close to the guide tube.

[0008] After the bone graft is placed into the feeding tube, the bone graft in the feeding channel can be observed through the feeding tube.

[0009] The setting of the graduated groove can conveniently observe the amount of bone graft inserted, thereby making it easier for assistants to operate and for medical staff to accurately insert the amount under the microscope. The setting of the push rod can assist the graduated groove in pushing out the bone graft. The setting of the guide tube can ensure the installation and storage of the push rod. The setting of the guide tube can accommodate and regularly place the bone graft.

[0010] The utility model is further configured as follows: a hinged portion is arranged on the outer side wall of one end of the push rod close to the gripping portion.

[0011] The hinge point can be provided by providing the hinge portion.

[0012] The utility model is further configured as follows: the ball head rod is hinged on the hinged portion.

[0013] By hingedly arranging the ball head rod on the hinged portion, the ball head rod can be stored when not in use.

[0014] The utility model is further configured as follows: a hinge hole is provided on the hinge part, a side positioning groove is provided on a side of the hinge part close to the gripping part, and a top positioning groove is provided on a side of the hinge part away from the push rod.

[0015] The side positioning grooves and the top positioning grooves are provided to provide a positioning effect to ensure that the ball head rod can be pushed with sufficient force.

[0016] The utility model is further configured as follows: the ball head rod comprises a ball head portion, a rod portion and a ball spring arranged in the rod portion, the ball spring is arranged on a side of the rod portion close to the hinge portion and can match the top positioning groove and the side positioning groove.

[0017] The setting of the ball spring can make the ball head rod easier to store during use, thus preventing the situation where it is difficult to store.

[0018] The utility model is further configured as follows: a bevel is provided on a side of the feeding pipe away from the guide pipe.

[0019] The setting of the oblique opening can make it easier to operate under the microscope and fit the ankle joint, and facilitate the turning operation during bone grafting.

[0020] The utility model is further configured as follows: five scale grooves of 1 ml, 2 ml, 3 ml, 4 ml, 5 ml and 6 ml are sequentially arranged on the feeding tube from the side close to the guide tube to the oblique direction.

[0021] The setting of multiple scale grooves can facilitate the personnel to observe more intuitively.

[0022] The utility model is further configured as follows: the opening direction of the placement hole is located in the direction of the bevel cut surface.

[0023] Opening holes in the same direction can make it easier to distinguish quickly during use to avoid operating errors, and it can also increase the amount of bone graft during use.

[0024] The utility model is further configured as follows: the holding portion is provided with holding grooves which are symmetrical to each other.

[0025] The symmetrical holding grooves can be arranged to make it easier for the user to hold the device, or to limit the position of the device.

[0026] The utility model is further configured as follows: the holding portion is a sheet-like structure which gradually becomes flat from a side close to the guide tube to a side away from the guide rod.

[0027] The gradually flattened sheet structure is more suitable for hand holding.

[0028] In summary, the utility model has the following beneficial effects: by setting the graduated groove, the amount of bone graft inserted can be conveniently observed, thereby making it easier for assistants to operate and for medical staff to accurately insert the amount under the microscope; by setting the push rod, the graduated groove can be used to assist in pushing out the bone graft; by setting the guide tube, the installation and storage of the push rod can be ensured; and by setting the guide tube, the bone graft can be accommodated and placed in a regular manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a three-dimensional diagram of the device in the embodiment of the utility model;

[0030] Figure 2 is a three-dimensional perspective view of the device in the embodiment of the utility model;

[0031] Figure 3 is a top view of the device in the embodiment of the utility model;

[0032] Figure 4 is a side view of the device in the embodiment of the utility model;

[0033] Figure 5 In the present utility model embodiment Figure 3 Section view along line AA;

[0034] Figure 6 In the present utility model embodiment Figure 5 Enlarged view of point A.

[0035] In the figure:

[0036] 1. guide tube; 11. gripping portion; 111. gripping groove; 12. guide groove; 13. push rod; 131. ball head rod; 1311. ball spring; 132. hinged portion; 1321. top positioning groove; 1322. side positioning groove; 1323. arc chamfer;

[0037] 2. Feeding tube; 21. Bevel mouth; 22. Placement hole; 23. Scale groove. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0039] It should be noted that if the terms "first", "second", etc. are involved in the specification and claims of the utility model and the above-mentioned drawings, they are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so as to describe the embodiments of the utility model described here.

[0040] In addition, when the terms "include" and "have" and any variations thereof are referred to, they are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0041] In addition, in the present invention, the terms "installation", "setting", "provided with", "connection", "connected", "socketing" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0042] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0043] The following is combined with Figure 1-6 The utility model is described in further detail.

[0044] Example

[0045] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, a bone transplantation device for an ankle joint comprises a guide tube 1 and a feeding tube 2.

[0046] A guide channel is provided in the guide tube 1, and a push rod 13 capable of axially moving along the channel is provided in the channel. A gripping portion 11 is provided at one end of the guide tube 1, and a guide groove 12 communicating with the guide channel is provided on the outer wall of the guide tube 1. A ball head rod 131 is provided on the side wall of one end of the push rod 13 close to the gripping portion 11, and the ball head rod 131 is at least partially disposed on the outer side of the guide tube 1 and is located in the guide groove 12.

[0047] The feeding tube 2 is arranged at one end of the guide tube 1 away from the gripping portion 11 , and is provided with a feeding channel connected to the guide channel. A plurality of scale grooves 23 are provided on the outer wall of the feeding tube 2 , and a placement hole 22 is provided at one end of the feeding tube 2 close to the guide tube 1 .

[0048] After the bone graft is placed into the feeding tube 2 , the bone graft in the feeding channel can be observed through the feeding tube 2 .

[0049] The setting of the graduated groove 23 can conveniently observe the amount of bone graft inserted, thereby making it easier for assistants to operate and for medical staff to accurately insert the amount under the microscope. The setting of the push rod 13 can assist the graduated groove 23 in pushing out the bone graft, and the setting of the guide tube 1 can ensure the installation and storage of the push rod 13. The setting of the guide tube 1 can accommodate and regularly place the bone graft.

[0050] A hinge portion 132 is provided on the outer wall of the push rod 13 at one end close to the grip portion 11 ; the hinge portion 132 can provide a hinge point.

[0051] The ball head rod 131 is hinged on the hinge portion 132 ; by hingedly mounting the ball head rod 131 on the hinge portion 132 , the ball head rod 131 can be stored when not in use.

[0052] A hinge hole is provided on the hinge part 132, a side positioning groove 1322 is provided on the side of the hinge part 132 close to the grip part 11, and a top positioning groove 1321 is provided on the side of the hinge part 132 away from the push rod 13; the setting of the side positioning groove 1322 and the top positioning groove 1321 can provide a positioning effect to ensure that the ball head rod 131 can be pushed with sufficient force when pushed.

[0053] The ball head rod 131 includes a ball head portion, a rod portion, and a ball spring 1311 arranged in the rod portion. The ball spring 1311 is arranged on one side of the rod portion close to the hinge portion 132 and can match the top positioning groove 1321 and the side positioning groove 1322. The setting of the ball spring 1311 can make the ball head rod 131 easier to store during use, preventing the situation where it is difficult to store.

[0054] As a preferred embodiment: in order to allow the ball head rod 131 to be well folded, Figure 6 As shown, the edge of one side of the hinge portion 132 close to the grip portion 11 is a circular chamfer 1323 .

[0055] A bevel 21 is provided on one side of the feeding tube 2 away from the guide tube 1 ; the setting of the bevel 21 can make it easier to operate under the microscope and fit the ankle joint, and facilitate the steering operation during bone transplantation.

[0056] The feeding tube 2 is provided with five scale grooves 23 of 1ml, 2ml, 3ml, 4ml, 5ml and 6ml in sequence from the side close to the guide tube 1 to the oblique opening 21; the arrangement of multiple scale grooves 23 enables the filling personnel to observe more intuitively.

[0057] The placement hole 22 is opened in the direction of the section of the oblique opening 21; opening the holes in the same direction can make it easier to distinguish faster during use to avoid operating errors, and can also increase the amount of bone grafting during use.

[0058] The gripping portion 11 is provided with symmetrical gripping grooves 111 ; the symmetrical gripping grooves 111 can be more convenient for the user to hold the device, or can be said to limit the position of the device.

[0059] The gripping portion 11 is a sheet-like structure that gradually becomes flatter from the side close to the guide tube 1 to the side away from the guide rod; the gradually flattened sheet-like structure is more suitable for hand gripping.

[0060] In this solution, the guide tube 1 and the feeding tube 2 can be detachably connected, fixedly connected, integrally formed, etc.

[0061] In this solution, in order to enable the internal situation and the feeding situation of the feeding tube 2 to be observed more directly, the feeding tube 2 is a transparent structure.

[0062] How it works

[0063] When stored: the ball head rod 131 is folded into the guide groove 12, and the guide groove 12 and the ball head are connected by interference fit to fix the stroke push rod 13 to achieve a storage effect.

[0064] During use: after the bone graft is filled to a specified amount through the placement hole 22, the ball head is swung to make the ball head rod 131 perpendicular to the guide tube 1, and then the ball spring 1311 is clamped in the top positioning groove 1321, and the ball head rod 131 is pushed to drive the push rod 13, and the push rod 13 is extended into the feeding tube 2. The end of the push rod 13 pushes the bone graft to move in the direction of the oblique mouth 21 to complete the bone grafting action.

[0065] It should be noted that all features disclosed in this specification, or steps in all methods or processes disclosed, except for mutually exclusive features and / or steps, can be combined in any manner.

[0066] In addition, the above specific embodiments are exemplary, and those skilled in the art can come up with various solutions inspired by the disclosure of the utility model, and these solutions also belong to the disclosure scope of the utility model and fall within the protection scope of the utility model. Those skilled in the art should understand that the utility model specification and its drawings are illustrative and do not constitute a limitation of the claims. The protection scope of the utility model is defined by the claims and their equivalents.

Claims

1. A bone transplantation device for an ankle joint, characterized in that: include: A guide tube (1), wherein a guide channel is arranged in the guide tube (1), wherein a push rod (13) capable of axially moving along the channel is arranged in the channel, wherein a gripping portion (11) is arranged at one end of the guide tube (1), wherein a guide groove (12) communicating with the guide channel is arranged on the outer wall of the guide tube (1), wherein a ball head rod (131) is arranged on the side wall of one end of the push rod (13) close to the gripping portion (11), wherein the ball head rod (131) is at least partially disposed on the outer side of the guide tube (1), and wherein the ball head rod (131) is located in the guide groove (12); A feeding tube (2) is arranged at an end of the guide tube (1) away from the gripping portion (11), the feeding tube (2) is provided with a feeding channel connected to the guide channel, a plurality of scale grooves (23) are provided on the outer wall of the feeding tube (2), and a placement hole (22) is provided at an end of the feeding tube (2) close to the guide tube (1); After the bone graft is placed into the feeding tube (2), the bone graft in the feeding channel can be observed through the feeding tube (2).

2. A bone transplantation device for ankle joint according to claim 1, characterized in that: A hinge portion (132) is provided on the outer side wall of one end of the push rod (13) close to the gripping portion (11).

3. A bone transplantation device for ankle joint according to claim 2, characterized in that: The ball head rod (131) is hinged on the hinged portion (132).

4. A bone transplantation device for ankle joint according to claim 2, characterized in that: The hinge portion (132) is provided with a hinge hole, a side positioning groove (1322) is provided on a side of the hinge portion (132) close to the grip portion (11), and a top positioning groove (1321) is provided on a side of the hinge portion (132) away from the push rod (13).

5. A bone transplantation device for ankle joint according to claim 4, characterized in that: The ball head rod (131) comprises a ball head, a rod portion, and a ball spring (1311) arranged in the rod portion. The ball spring (1311) is arranged on a side of the rod portion close to the hinge portion (132) and can match the top positioning groove (1321) and the side positioning groove (1322).

6. A bone transplantation device for ankle joint according to claim 1, characterized in that: A bevel (21) is provided on the side of the feeding tube (2) away from the guide tube (1).

7. A bone transplantation device for ankle joint according to claim 6, characterized in that: The feeding tube (2) is provided with five graduated grooves (23) of 1 ml, 2 ml, 3 ml, 4 ml, 5 ml and 6 ml in sequence from the side close to the guide tube (1) towards the oblique opening (21).

8. The bone transplantation device for ankle joint according to claim 6, characterized in that: The opening direction of the placement hole (22) is located in the direction of the section of the oblique opening (21).

9. The bone transplantation device for ankle joint according to claim 1, characterized in that: The gripping portion (11) is provided with mutually symmetrical gripping grooves (111).

10. A bone transplantation device for ankle joint according to claim 9, characterized in that: The gripping portion (11) is a sheet-like structure that gradually becomes flatter from a side close to the guide tube (1) to a side away from the guide tube (1).

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