Bone block transplanter

Abstract

The utility model discloses a bone block transplanter, which comprises a pin shaft, two forceps arms and two symmetrical catheters, one forceps arm is hinged with the other forceps arm through the pin shaft, one end of each forceps arm is provided with a forceps head, the other end of each forceps arm is provided with a handle, the handle and the forceps head are integrally formed with the forceps arms, and the catheters are arranged on the forceps arms. The pin shaft is located between the forceps heads and the handles, connecting blocks are arranged on the forceps heads of the two forceps clamping arms, one side of one connecting block is detachably and fixedly connected with the corresponding forceps head, and one side of the other connecting block is movably connected with the corresponding forceps head in the clamping direction of the forceps heads. The other corresponding sides of the connecting blocks are matched with the outer sides of the two catheters respectively and connected with one ends of the catheters, the inner sides of the two catheters jointly form an implantation channel, the other ends of the catheters are suspended, and the catheters are perpendicular to the forceps clamping arms. The utility model has the beneficial effect that the implantation direction and position accuracy can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field related to bone transplanters, in particular to a bone transplanter. Background Art

[0002] Approximately 600,000 cases of traumatic fractures and bone defects occur annually. Of these, 20% suffer from compression fractures of the metaphyseal, calcaneal, and tibial plateau cancellous bones, leading to bone loss. Treatment for these areas typically involves open reduction and internal fixation, using bone grafts with sufficient support strength. Therefore, to facilitate smooth bone grafting, surgical instruments that meet the requirements for implanting artificial bone repair materials and bone grafts are required.

[0003] The Chinese patent number is CN209574854U, and the authorization announcement date is November 5, 2019. It discloses a pliers-type bone implanter, including a first pliers head, a first pliers arm and a first pliers handle, and a second pliers head, a second pliers arm and a second pliers handle. The first pliers head and the second pliers head are arranged parallel to each other, and the front ends are both clamping parts, and the middle sections are both provided with long holes; the first pliers arm and the second pliers arm are hinged; the front end of the first pliers arm is connected to the middle section of the second pliers head through the long hole, and can move back and forth along the long hole; the rear end of the first pliers arm is hinged to the rear end of the first pliers head; the front end of the second pliers arm is connected to the middle section of the first pliers head through the long hole, and can move back and forth along the long hole; the rear end of the second pliers arm is hinged to the rear end of the second pliers head; the front end of the first pliers handle is fixedly connected to the rear end of the first pliers arm, and the front end of the second pliers handle is fixedly connected to the rear end of the second pliers arm.

[0004] The above patent has the following deficiencies: the front ends of the first and second clamp heads are both integrally formed clamping parts, so the bone block is only clamped by the clamp heads and directly implanted into the corresponding part of the human body, and the accuracy of the implantation direction and position of the bone block cannot be guaranteed. Utility Model Content

[0005] The utility model aims to overcome the deficiency in the prior art that the direction and position of bone block implantation cannot be guaranteed to be accurate, and provides a bone block transplanter that is conducive to ensuring the accuracy of implantation direction and position.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A bone transplanter, which includes a pin, two clamp arms and two symmetrically arranged catheters, wherein one clamp arm is hinged to the other clamp arm through a pin, one end of the clamp arm is provided with a clamp head, and the other end of the clamp arm is provided with a handle, the handle and the clamp head are integrally formed with the clamp arm, the pin is located between the clamp head and the handle, and the clamp heads of the two clamp arms are provided with connecting blocks, one side of which is detachably fixedly connected to the corresponding clamp head, and one side of the other connecting block is movably connected to the corresponding clamp head along the clamping direction of the clamp head, the other side corresponding to the connecting block is matched with the outer sides of the two catheters respectively and connected to one end of the catheter, the inner sides of the two catheters jointly constitute an implantation channel, the other end of the catheter is suspended, and the catheter and the clamp arm are perpendicular to each other.

[0008] One of the clamp arms is hingedly connected to the other clamp arm by a pin. One end of the clamp arm is provided with a clamp head, and the other end of the clamp arm is provided with a handle. The handle and clamp head are integrally formed with the clamp arm. The pin is located between the clamp head and the handle. The clamp heads of both clamp arms are provided with a connecting block. One side of one connecting block is detachably fixedly connected to the corresponding clamp head, and one side of the other connecting block is movably connected to the corresponding clamp head along the clamp head's clamping direction. The other side of the connecting block matches the outer side of two catheters and is connected to one end of the catheter. The inner sides of the two catheters together form an implantation channel. The other ends of the catheters are suspended in the air, and the catheters are perpendicular to the clamp arms. After the medical staff holds the handle and inserts the catheter into the corresponding part of the human body to locate it, they begin to implant the bone block. The bone block is implanted along the implantation channel, replacing the traditional clamping operation, thereby ensuring the accuracy of implantation direction and position. At the same time, because one side of the other connecting block is movably connected to the corresponding clamp head along the clamp head's clamping direction, a more precise implantation channel is provided during the bone block placement process.

[0009] Preferably, a viewing window is provided on the side wall of the catheter, the length of the viewing window being parallel to the length of the catheter, and a scale is provided on the outer side wall of the catheter along its length. Through the viewing window, medical personnel can clearly understand the specific location and depth of bone block implantation, thereby further improving the accuracy of bone block implantation.

[0010] As preferred, the obturator further comprises a guide needle which is matched with the inside of the implantation channel, the inside of the guide needle is hollow, one end of the guide needle is provided with a conical surface, the other end of the guide needle is provided with a rear seat which is fixedly connected with the guide needle, the center of the rear seat is provided with a through hole one which is communicated with the inside of the guide needle, and the rear seat is limited outside the implantation channel. Before implanting the bone block, the medical staff first implants the exchange rod in the corresponding position for positioning; then the obturator is inserted into the implantation channel for assembly and cooperation, and then enters the human body along the exchange rod through the inside of the guide needle; then the obturator and the exchange rod are removed; finally, the bone block can be implanted through the implantation channel, so that the bone block graft cooperates with the obturator and the exchange rod to realize precise positioning.

[0011] As preferred, the end of the guide needle is provided with a convex shaft which is fixedly connected with the guide needle and is provided with a through hole two which is communicated with the inside of the guide needle, one side of the rear seat is provided with a mounting groove which is matched with the convex shaft, and the rear seat is fixedly connected with the end of the guide needle through the mounting groove matched with the convex shaft, and the through hole one is located on the other side of the rear seat corresponding to the through hole two and is communicated with the inside of the guide needle. The through hole one and the through hole two facilitate the penetration of the exchange rod, and facilitate the obturator and the bone block graft to enter the human body along the exchange rod after assembly.

[0012] As preferred, the handle is provided with a spring sheet which is located between the two clamp arms, one end of the spring sheet is close to the pin shaft, the other end of the spring sheet is away from the pin shaft, one end of the spring sheet close to the pin shaft on one of the clamp arms is connected with the other end of the spring sheet close to the pin shaft on the other clamp arm handle, and the other end of the spring sheet away from the pin shaft is fixedly connected with the handle on the corresponding clamp arm. Under the action of the spring sheet, the clamp head on the two clamp arms is always in a clamping state, thereby facilitating to ensure the position stability of the implantation channel during the bone block implantation process, and thereby facilitating to ensure the position accuracy of the bone block after implantation.

[0013] Preferably, a locking block is provided on one of the clamp arms, and the locking block is located between the spring sheet and the pin shaft, one end of the locking block is fixedly connected to the clamp arm, and the other end of the locking block is suspended between the two clamp arms, one side of the locking block is close to the pin shaft and protrudes with a plurality of locking teeth evenly distributed along the length direction of the locking block, and the other corresponding side of the locking block is away from the pin shaft, and the locking block arches from the side close to the pin shaft to the side away from the pin shaft to form an arc structure, and a locking card is provided on one side of the other clamp arm, and a rotating hole is provided inside the clamp arm, one end of the locking card is rotatably connected to the rotating hole and fixedly connected to a wrench, and the wrench is located on the other side corresponding to the clamp arm, and the other end of the locking card is provided with a plurality of locking teeth matching the locking teeth. When the clamp heads on the two clamp arms are in a clamping state under the action of the spring sheet, the locking block and the locking card are in a locked engagement state, which further improves the position stability of the implantation channel during the bone block implantation process, thereby helping to ensure the position accuracy of the bone block after implantation; when the lock needs to be released, the medical staff can simply turn the wrench, which is convenient and quick to operate.

[0014] The beneficial effects of the present invention are as follows: the bone block is implanted along the implantation channel to replace the traditional clamping operation, thereby achieving the purpose of ensuring the implantation direction and position accuracy; it is convenient to provide a more accurate implantation channel during the placement of the bone block; medical personnel can clearly know the specific position and depth of the bone block implantation through the visual window, which is conducive to further improving the position accuracy of the bone block implantation; therefore, the bone block transplanter can be combined with the obturator and the exchange rod to achieve precise positioning; under the action of the spring sheet, the clamp heads on the two clamping arms are always in a clamping state, which is conducive to ensuring the position stability of the implantation channel during the bone block implantation process, thereby ensuring the position accuracy of the bone block after implantation; the locking block and the locking card are in a locked engagement state, which further improves the position stability of the implantation channel during the bone block implantation process, thereby ensuring the position accuracy of the bone block after implantation; when the lock needs to be released, the medical personnel can simply pull the wrench, and the operation is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the structure of the catheter;

[0017] Figure 3 yes Figure 2 Right view;

[0018] Figure 4 yes Figure 2 Bottom view of

[0019] Figure 5 It is a schematic diagram of the structure of the obturator;

[0020] Figure 6 It is a schematic diagram of the structure of the guide needle;

[0021] Figure 7 yes Figure 6 Right view;

[0022] Figure 8 This is a schematic diagram of the rear seat structure.

[0023] In the figure: 1. Pin, 2. Clamp arm, 3. Catheter, 4. Clamp head, 5. Handle, 6. Connecting block, 7. Implantation channel, 8. Visual window, 9. Guide pin, 10. Conical surface, 11. Back seat, 12. Through hole 1, 13. Protruding shaft, 14. Through hole 2, 15. Mounting slot, 16. Spring leaf, 17. Locking block, 18. Locking tooth, 19. Locking latch, 20. Rotation hole, 21. Wrench, 22. Locking tooth. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0025] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0026] Unless otherwise specified, the relative arrangement of components, numerical expressions, and values ​​described in these embodiments do not limit the scope of this application. For ease of description, spatially relative terms such as "upper," "lower," "left," and "right" are used in the embodiments to illustrate the relationship of one element or feature shown in the figures relative to another. It should be understood that, in addition to the orientations shown in the figures, spatial terms are intended to encompass different orientations of the device during use or operation. For example, if the device in the figure is inverted, an element described as being "below" another element or feature would be fixed "above" the other element or feature. Therefore, the exemplary term "below" can include both upper and lower orientations. The device can be fixed in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein should be interpreted accordingly. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to scale. Technologies, processes, and equipment known to those skilled in the relevant art may not be discussed in detail, but, where appropriate, should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.It should be noted that like reference numerals and letters denote similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0027] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0028] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 In the described embodiment, a bone transplanter is provided, which includes a pin 1, two clamp arms 2 and two symmetrically arranged catheters 3, wherein one clamp arm 2 is hinged to the other clamp arm 2 by the pin 1, one end of the clamp arm 2 is provided with a clamp head 4, and the other end of the clamp arm 2 is provided with a handle 5, the handle 5 and the clamp head 4 are integrally formed with the clamp arm 2, the pin 1 is located between the clamp head 4 and the handle 5, and the clamp heads 4 of the two clamp arms 2 are provided with connecting blocks 6, one side of which is detachably fixedly connected to the corresponding clamp head 4, and one side of the other connecting block 6 is movably connected to the corresponding clamp head 4 along the clamping direction of the clamp head 4, the other side of the connecting block 6 is respectively matched with the outer sides of the two catheters 3 and connected to one end of the catheter 3, the inner sides of the two catheters 3 jointly constitute an implantation channel 7, the other end of the catheter 3 is suspended, and the catheter 3 and the clamp arm 2 are perpendicular to each other.

[0029] like Figure 2 As shown, a visual window 8 is provided on the side wall of the catheter 3, and the length direction of the visual window 8 is parallel to the length direction of the catheter 3. The outer wall of the catheter 3 is provided with scales along its length direction.

[0030] like Figure 5 、 Figure 6 、 Figure 7 and Figure 8 As shown, the obturator is also included, which includes a guide needle 9 that matches the interior of the implantation channel 7. The interior of the guide needle 9 is hollow, and one end of the guide needle 9 is provided with a conical surface 10, and the other end of the guide needle 9 is provided with a back seat 11, which is fixedly connected to the guide needle 9. The center of the back seat 11 is provided with a through hole 12 that is connected to the interior of the guide needle 9, and the back seat 11 is limited to the outside of the implantation channel 7.

[0031] like Figure 6 、 Figure 7 and Figure 8 As shown, a convex shaft 13 is provided at the center of the end of the guide needle 9, the convex shaft 13 is fixedly connected to the guide needle 9 and is provided with a through hole 2 14 connected to the inside of the guide needle 9, and a mounting groove 15 matching the convex shaft 13 is provided on one side of the rear seat 11. The rear seat 11 is fixedly connected to the end of the guide needle 9 by matching the convex shaft 13 through the mounting groove 15, and the through hole 12 is located on the other side corresponding to the rear seat 11 and is connected to the inside of the guide needle 9 through the through hole 2 14.

[0032] like Figure 1 As shown, a spring sheet 16 is provided on the handle 5, and the spring sheet 16 is located between the two clamp arms 2. One end of the spring sheet 16 is close to the pin 1, and the other end of the spring sheet 16 is away from the pin 1. The end of the spring sheet 16 on the handle 5 of one clamp arm 2 close to the pin 1 is connected to the end of the spring sheet 16 on the handle 5 of the other clamp arm 2 close to the pin 1, and the end of the spring sheet 16 away from the pin 1 is fixedly connected to the handle 5 on the corresponding clamp arm 2.

[0033] like Figure 1 As shown, a locking block 17 is provided on one of the clamp arms 2, and the locking block 17 is located between the spring sheet 16 and the pin shaft 1. One end of the locking block 17 is fixedly connected to the clamp arm 2, and the other end of the locking block 17 is suspended between the two clamp arms 2. One side of the locking block 17 is close to the pin shaft 1 and is protruding with a plurality of locking teeth 18 evenly distributed along the length direction of the locking block 17. The other corresponding side of the locking block 17 is away from the pin shaft 1. The locking block 17 arches from the side close to the pin shaft 1 to the side away from the pin shaft 1 to form an arc structure. A locking card 19 is provided on one side of the other clamp arm 2, and a rotating hole 20 is provided inside the clamp arm 2. One end of the locking card 19 is rotatably connected to the rotating hole 20 and is fixedly connected to a wrench 21. The wrench 21 is located on the other corresponding side of the clamp arm 2, and the other end of the locking card 19 is provided with a plurality of locking teeth 22 matching the locking teeth 18.

[0034] During the specific operation, before implanting the bone block, the medical staff first uses the exchange rod to implant the corresponding position for positioning; then the obturator is inserted into the implantation channel 7 and assembled with the bone transplanter. The medical staff holds the handle 5 and passes the obturator through the inside of the guide needle 9 along the exchange rod into the corresponding part of the human body; then the obturator and the exchange rod are removed; finally, the medical staff implants the bone block through the implantation channel 7, so the bone transplanter, in combination with the obturator and the exchange rod, can achieve precise positioning.

[0035] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bone transplanter, characterized in that: The invention comprises a pin shaft (1), two clamp arms (2) and two symmetrically arranged guide tubes (3), wherein one clamp arm (2) is hinged to the other clamp arm (2) via the pin shaft (1), one end of the clamp arm (2) is provided with a clamp head (4), and the other end of the clamp arm (2) is provided with a handle (5), the handle (5) and the clamp head (4) are both integrally formed with the clamp arm (2), the pin shaft (1) is located between the clamp head (4) and the handle (5), and the clamp heads (4) of the two clamp arms (2) are both provided with a connecting block ( 6), one side of one connecting block (6) is detachably fixedly connected to the corresponding clamp head (4), and one side of the other connecting block (6) is movably connected to the corresponding clamp head (4) along the clamping direction of the clamp head (4), and the other side of the connecting block (6) is matched with the outer sides of the two catheters (3) and connected to one end of the catheter (3), and the inner sides of the two catheters (3) together constitute an implantation channel (7), and the other end of the catheter (3) is suspended in the air, and the catheter (3) and the clamp arm (2) are perpendicular to each other.

2. The bone transplanter according to claim 1, characterized in that: A visual window (8) is provided on the side wall of the catheter (3), the length direction of the visual window (8) is parallel to the length direction of the catheter (3), and a scale is provided on the outer side wall of the catheter (3) along its length direction.

3. The bone transplanter according to claim 2, wherein: The invention also includes an obturator, which includes a guide needle (9) that matches the interior of the implantation channel (7), the interior of the guide needle (9) is hollow, one end of the guide needle (9) is provided with a conical surface (10), the other end of the guide needle (9) is provided with a back seat (11), the back seat (11) is fixedly connected to the guide needle (9), the center of the back seat (11) is provided with a through hole (12) that is connected to the interior of the guide needle (9), and the back seat (11) is limited to the outside of the implantation channel (7).

4. The bone transplanter according to claim 3, wherein: A convex shaft (13) is provided at the center of the end of the guide needle (9), the convex shaft (13) is fixedly connected to the guide needle (9) and is provided with a second through hole (14) connected to the inside of the guide needle (9), a mounting groove (15) matching the convex shaft (13) is provided on one side of the rear seat (11), the rear seat (11) is fixedly connected to the end of the guide needle (9) by matching the convex shaft (13) through the mounting groove (15), and the first through hole (12) is located on the other side corresponding to the rear seat (11) and is connected to the inside of the guide needle (9) through the second through hole (14).

5. A bone transplanter according to claim 1, 2, 3 or 4, characterized in that: A spring sheet (16) is provided on the handle (5), and the spring sheet (16) is located between the two clamp arms (2). One end of the spring sheet (16) is close to the pin shaft (1), and the other end of the spring sheet (16) is away from the pin shaft (1). One end of the spring sheet (16) on the handle (5) of one clamp arm (2) close to the pin shaft (1) is connected to one end of the spring sheet (16) on the handle (5) of the other clamp arm (2) close to the pin shaft (1), and the end of the spring sheet (16) away from the pin shaft (1) is fixedly connected to the handle (5) on the corresponding clamp arm (2).

6. The bone transplanter according to claim 5, characterized in that: One of them A locking block (17) is provided on the clamp arm (2), and the locking block (17) is located between the spring sheet (16) and the pin shaft (1). One end of the locking block (17) is fixedly connected to the clamp arm (2), and the other end of the locking block (17) is suspended between the two clamp arms (2). One side of the locking block (17) is close to the pin shaft (1) and is protruding with a plurality of locking teeth (18) evenly distributed along the length direction of the locking block (17). The other side of the locking block (17) is away from the pin shaft (1). The locking block ( 17) is arched from the side close to the pin shaft (1) to the side away from the pin shaft (1) to form an arc structure, and a lock card (19) is provided on one side of the other clamp arm (2), and a rotating hole (20) is provided inside the clamp arm (2). One end of the lock card (19) is rotatably connected to the rotating hole (20) and is fixedly connected to a wrench (21), and the wrench (21) is located on the other side corresponding to the clamp arm (2), and the other end of the lock card (19) is provided with a plurality of teeth (22) matching the lock teeth (18).

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