Device for continuously conveying titanium nails

Abstract

The utility model relates to the technical field of medical instruments, in particular to a device for continuously conveying titanium nails, which comprises a machine shell, two wave-shaped elastic pieces are arranged in a containing cavity of the machine shell, a plurality of containing grooves and a nail outlet groove are formed by the two wave-shaped elastic pieces, the titanium nails are placed in the containing grooves, and a push block is arranged in the containing cavity in a sliding mode. The push block pushes the titanium nails to move to the nail outlet groove from the containing groove in sequence. A conical clamping cylinder is arranged below the nail outlet groove, and the titanium nails fall into the conical clamping cylinder from the nail outlet groove. The push rod assembly is arranged on the machine shell in a sliding mode, the conical clamping cylinder is connected to the push rod assembly, the push rod assembly can push the conical clamping cylinder out of the machine shell, a surgeon can conveniently align a titanium nail to an operation hole to fix the titanium nail, continuous conveying of the titanium nail in an operation is achieved, using is more convenient, and the risk that the titanium nail falls off is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of medical devices, specifically to a device for continuously conveying titanium nails. Background Technology

[0002] Titanium plates and screws are widely used in various oral and maxillofacial surgeries, such as fracture surgery, orthognathic surgery, and jaw reconstruction, involving bone tissue. Since oral and maxillofacial surgeries are located in the face, many patients refuse incisions in the maxillofacial region, forcing surgeons to perform robust internal fixation within the confined space of the mouth. Currently, surgeons typically place the titanium plate in the appropriate position, drill a hole, and then a scrub nurse uses a screwdriver to remove a titanium screw, transferring it to the surgeon. The surgeon then aligns the screwdriver with the screw and tightens it. Throughout this process, from the scrub nurse picking up the screw to the surgeon tightening it, the screwdriver and screw are only held together by a weak magnetic force from the screwdriver tip. This poses a risk of accidental dislodgement, and there have even been cases where the screw has fallen into the soft tissue of the surgical area and been lost.

[0003] Some surgeons use curved forceps to hold the titanium screws in place to prevent them from falling out. However, in actual operation, due to the small size of the titanium screws, holding them in place can cause them to fly away. Once this happens, it will make it more difficult to find the titanium screws.

[0004] To address the aforementioned issues, existing patent CN107049534A discloses a self-locking screwdriver bit specifically designed for anchorage titanium screws. This bit features an elastic clamping part within the connecting hole. This elastic clamping part grips the polygonal head of the anchorage titanium screw, and under the clamping force, the polygonal head of the anchorage titanium screw is securely engaged with the connecting hole, ensuring that the screwdriver bit does not easily detach from the anchorage titanium screw and preventing it from falling out during surgical screw removal and implantation. While this method can mitigate the risk of titanium screw falling out to some extent, it cannot achieve continuous screw output and is not yet convenient to use. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model proposes a device for continuously delivering titanium nails. Multiple titanium nails are placed in a receiving groove between two wave-shaped spring plates. A pusher block then moves each titanium nail sequentially from the receiving groove to the nail outlet groove, where it falls into a conical clamping cylinder. Finally, a pusher assembly pushes the conical clamping cylinder and the titanium nails out of the machine housing together. This allows the surgeon to easily align the titanium nails with the surgical hole for fixation, thus achieving continuous delivery of titanium nails during surgery. This method is more convenient to use and significantly reduces the risk of titanium nails falling out.

[0006] To achieve the above objectives, the present invention provides a device for continuously conveying titanium nails, comprising a housing, wherein the housing has a receiving cavity with a top opening, and two wave-shaped spring sheets are provided inside the receiving cavity, the wave-shaped spring sheets being in close contact with the inner wall of the receiving cavity; multiple troughs of the two wave-shaped spring sheets are respectively arranged opposite each other to form multiple receiving grooves and a nail dispensing groove, and multiple peaks of the two wave-shaped spring sheets are arranged opposite each other to form multiple limiting parts; titanium nails are placed in the receiving grooves, and a cover plate is detachably connected to the top opening of the receiving cavity; a push block is slidably arranged inside the receiving cavity, and a slider is provided on the housing to drive the push block to slide, the push block pushing each titanium nail sequentially from the receiving groove to the nail dispensing groove; a conical clamping cylinder is provided below the nail dispensing groove, and the titanium nails fall from the nail dispensing groove into the conical clamping cylinder; a push rod assembly is slidably arranged on the housing, the conical clamping cylinder being connected to the push rod assembly, the push rod assembly being able to push the conical clamping cylinder out of the housing.

[0007] In one specific embodiment, the titanium nail includes a titanium nail rod and a titanium nail cap, the diameter of the receiving groove is larger than the diameter of the titanium nail rod but smaller than the diameter of the titanium nail cap, and the diameter of the nail discharging groove is larger than the diameter of the titanium nail cap.

[0008] In one specific embodiment, the slider is slidably disposed on the side wall of the housing, and the slider is fixedly connected to the push block.

[0009] In one specific embodiment, the slider is slidably disposed on the top of the housing, the housing is provided with a spring groove, the spring groove is provided with a first spring, and the first spring is connected between the slider and the push block.

[0010] In one specific embodiment, the contact surface between the pusher block and the titanium nail is an arc surface.

[0011] In one specific embodiment, the bottom of the housing is provided with a sliding groove, and the push rod assembly is disposed within the sliding groove; the push rod assembly includes: a driving rod body, a first driven connecting rod, a second driven connecting rod, a third driven connecting rod, a fourth driven connecting rod, and a second spring; a limiting block is provided within the sliding groove, the first end of the driving rod body passes through the limiting block, and the end of the first end of the driving rod body abuts against the limiting block with the third spring; the second end of the driving rod body is hinged to the first ends of the first driven connecting rod and the first ends of the second driven connecting rod, and the third spring... The second end of a driven link is hinged to the first end of a third driven link, the second end of the second driven link is hinged to the first end of a fourth driven link, the middle parts of the third and fourth driven links are hinged, and the second spring is connected between the third and fourth driven links; the conical clamping cylinder includes two semi-circular cylinders, the two semi-circular cylinders are respectively connected to the second end of the third driven link and the second end of the fourth driven link, and the two semi-circular cylinders are clamped under the action of the second spring.

[0012] In one specific embodiment, the third spring is sleeved on the first end of the active rod.

[0013] In one specific embodiment, a trigger lever is rotatably connected to the bottom of the housing, the first end of the trigger lever abuts against the first end of the drive lever, and the first end of the trigger lever is located outside the housing.

[0014] In one specific embodiment, a torsion spring is provided between the trigger lever and the housing.

[0015] In one specific embodiment, the cover is snapped onto the top opening of the receiving cavity.

[0016] The beneficial effects of the continuous titanium nail delivery device provided by this utility model are as follows: By placing multiple titanium nails in the receiving groove between two wave-shaped spring sheets, and then pushing each titanium nail sequentially from the receiving groove to the nail outlet groove by a pusher block, and then dropping it into the conical clamping cylinder, the pusher assembly pushes the conical clamping cylinder and the titanium nail out of the machine housing together, which makes it convenient for the surgeon to align the titanium nail with the surgical hole for fixation, thereby realizing continuous delivery of titanium nails during surgery, making it more convenient to use, and greatly reducing the risk of titanium nails falling off. Attached Figure Description

[0017] Figure 1 This is an overall structural diagram of an embodiment of the present utility model.

[0018] Figure 2 This is a structural diagram of the wave spring.

[0019] Figure 3 This is a schematic diagram of the titanium nail structure.

[0020] Figure 4 This is a schematic diagram of the push rod assembly mounted on the housing.

[0021] Reference numerals: housing 1, spring groove 11, slide groove 12, limiting block 13, wave spring 2, receiving groove 21, nail outlet groove 22, limiting part 23, titanium nail 3, titanium nail rod 31, titanium nail cap 32, cover plate 4, push block 51, slider 52, conical clamping cylinder 6, driving rod 71, first driven link 72, second driven link 73, third driven link 74, fourth driven link 75, second spring 76, third spring 77, trigger lever 8. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] The device for continuously conveying titanium nails provided by this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] Please see Figure 1 and Figure 2 To achieve the above objectives, the present invention provides a device for continuously conveying titanium nails 3, comprising a housing 1, an inner cavity with a top opening, and two corrugated spring sheets 2 inside the inner wall of the inner cavity. The length of the corrugated spring sheets 2 is slightly less than the length of the inner cavity to ensure that the corrugated spring sheets 2 can deform under pressure. Multiple troughs of the two corrugated spring sheets 2 are respectively arranged opposite each other to form multiple receiving grooves 21 and a nail dispensing groove 22. Multiple peaks of the two corrugated spring sheets 2 are arranged opposite each other to form multiple limiting parts 23. Titanium nails 3 are placed in the receiving grooves 21, and a cover plate 4 is detachably connected to the top opening of the inner cavity. When the corrugated spring sheets 2 deform under pressure, the titanium nails 3 can move from one receiving groove 21 to another through the limiting parts 23 formed by the peaks of the corrugated spring sheets 2. When the cover plate 4 is open, it facilitates the placement of the titanium nail 3 into the receiving groove 21. When closed, it serves to limit the movement of the titanium nail 3 and the corrugated spring 2 within the receiving cavity. The cover plate 4 is attached to the top opening of the receiving cavity via a snap-fit ​​connection, facilitating easy assembly and disassembly. The receiving groove 21 and the nail outlet groove 22 are constructed using two corrugated springs 2, resulting in a simple and easy-to-manufacture structure that is also convenient to assemble.

[0025] Please see Figure 1 and Figure 3A pusher block 51 is slidably arranged inside the receiving cavity. A slider 52 is provided on the housing 1 to drive the pusher block 51 to slide. When the slider 52 is pushed, the pusher block 51 pushes the titanium nail 3 in contact with it forward to the next receiving groove 21. Other titanium nails 3 move to the next receiving groove 21 in sequence under the pushing action of the previous titanium nail 3. Meanwhile, the titanium nail 3 close to the nail outlet groove 22 moves into the nail outlet groove 22 under the pushing action of the previous titanium nail 3. This realizes the continuous conveying operation of titanium nail 3, which pushes each titanium nail 3 from the receiving groove 21 to the nail outlet groove 22 in sequence. The titanium nail 3 includes a titanium nail rod 31 and a titanium nail cap 32. The diameter of the receiving groove 21 is larger than the diameter of the titanium nail rod 31 but smaller than the diameter of the titanium nail cap 32. This creates a structure in which the titanium nail rod 31 is inserted into the receiving groove 21, while the titanium nail cap 32 is supported on the top surface of the wave spring 2. This arrangement, on the one hand, cooperates with the cover plate 4 to limit the movement of the titanium nail 3, preventing the titanium nail 3 from tilting during the pushing process and ensuring that the titanium nail 3 can be smoothly pushed into the next receiving groove 21. On the other hand, because the diameter of the titanium nail rod 31 is small, the deformation required for the wave spring 2 when the titanium nail 3 passes through the limiting part 23 is small, that is, the force required to push the titanium nail 3 is small, making it easier to push the titanium nail 3 to move. Furthermore, adjacent titanium nails 3 are pressed together by the titanium nail cap 32, which has a larger diameter and mass, making the pushing between adjacent titanium nails 3 more stable and preventing the titanium nail 3 from being damaged by the pushing force. The diameter of the nail outlet groove 22 is larger than the diameter of the titanium nail cap 32, allowing the titanium nail 3 pushed into the titanium nail 3 groove to automatically fall out of the groove, thus achieving the discharge of the titanium nail 3. The contact surface between the push block 51 and the titanium nail 3 is an arc surface. This design increases the contact area between the push block 51 and the titanium nail 3, dispersing the compressive force on the titanium nail 3, preventing damage to the titanium nail 3, and making the pushing of the titanium nail 3 smoother.

[0026] Please see Figure 1 The slider 52 is slidably mounted on the top of the housing 1. The housing 1 contains two spring grooves 11, which communicate with the guide groove of the slider 52 and the side walls of the receiving cavity. A first spring (not shown in the figure) is located within each spring groove 11. The two side walls of the push block 51 extend into the two spring grooves 11, and the first spring connects the slider 52 and the push block 51. When the slider 52 is pushed, the pushing force is transmitted from the two first springs to the push block 51, which then acts on the titanium nails 3. By using an elastic connection between the push block 51 and the slider 52, excessive force when pushing the slider 52 can be prevented from pushing out multiple titanium nails 3 at once, thus avoiding loss and waste. Of course, in other embodiments, the slider 52 can also be slidably mounted on the side wall of the housing 1, with the slider 52 and push block 51 fixedly connected. Compared to the elastic connection between the push block 51 and the slider 52, this structure requires precise control of the force applied when pushing the slider 52.

[0027] Please see Figure 4Below the nail ejection groove 22 is a conical clamping cylinder 6. The titanium nail 3 falls from the nail ejection groove 22 into the conical clamping cylinder 6. The gap between the lower surface of the nail ejection groove 22 and the upper surface of the conical clamping cylinder 6 should ensure that the titanium nail 3 can fall smoothly from the nail ejection groove 22 into the conical clamping cylinder 6. Ideally, the lower surface of the nail ejection groove 22 should fit against the upper surface of the conical clamping cylinder 6.

[0028] The bottom of the housing 1 is provided with a sliding groove 12, and a push rod assembly is slidably disposed in the sliding groove 12. The push rod assembly includes: a driving rod 71, a first driven connecting rod 72, a second driven connecting rod 73, a third driven connecting rod 74, a fourth driven connecting rod 75, and a second spring 76. A limiting block 13 is provided in the sliding groove 12. The first end of the driving rod 71 passes through the limiting block 13, and a third spring 77 abuts against the end of the first end of the driving rod 71 and the limiting block 13. The third spring 77 is sleeved on the first end of the driving rod 71. With this arrangement, the driving rod 71 can automatically return to its original position after sliding under force, and the third spring 77 will not twist or fail during deformation due to the constraint of the driving rod 71. The second end of the driving link 71 is hinged to the first end of the first driven link 72 and the first end of the second driven link 73. The second end of the first driven link 72 is hinged to the first end of the third driven link 74. The second end of the second driven link 73 is hinged to the first end of the fourth driven link 75. The middle parts of the third driven link 74 and the fourth driven link 75 are hinged. The second spring 76 connects the third driven link 74 and the fourth driven link 75. The first driven link 72, the second driven link 73, the third driven link 74, and the fourth driven link 75 form a four-bar linkage with multiple degrees of freedom, allowing each link to swing freely. The third driven link 74, the fourth driven link 75, and the second spring 76 form a spring-scissor structure. This spring-scissor structure is closed under the action of the second spring 76 in normal conditions and opens when the second spring 76 is compressed by an external force. The conical clamping cylinder 6 includes two semi-circular cylinders, which are respectively connected to the second end of the third driven link 74 and the second end of the fourth driven link 75. The two semi-circular cylinders are clamped under the action of the second spring 76, that is, the spring scissor structure is in the normal state.

[0029] Please see Figure 1 and Figure 4A trigger lever 8 is rotatably connected to the bottom of the housing 1. The first end of the trigger lever 8 abuts against the first end of the active lever 71. The first end of the trigger lever 8 is located outside the housing 1. With this configuration, pulling the trigger lever 8 will push the active lever 71 to slide, thereby moving the push rod assembly. The movement of the push rod assembly will move the conical clamping cylinder 6 and the titanium nail 3 inside the conical clamping cylinder 6 together to the outside of the housing 1. The surgeon then inserts a screwdriver into the conical clamping cylinder 6, so that the screwdriver is pressed against the titanium nail 3 to prevent the titanium nail 3 from dislodging from the conical clamping cylinder 6, and then performs the titanium nail 3 locking operation. Since the conical clamping cylinder 6 is clamped by the force of the second spring 76, during the locking process, the titanium nail cap 32 can open the conical clamping cylinder 6, thereby allowing the titanium nail 3 to be locked and then dislodging from the conical clamping cylinder 6 after locking. The bottom of the conical clamping cylinder 6 can also be made magnetic. This prevents the titanium nail 3, once inside the conical clamping cylinder 6, from detaching due to magnetic attraction, eliminating the need to use a screwdriver to hold the titanium nail 3 in place before locking. A torsion spring (not shown in the figure) is also provided between the trigger lever 8 and the housing 1, ensuring that the trigger lever 8 remains in contact with the drive lever 71 under the torsion of the spring, facilitating use. This structure, where the trigger lever 8 is kept in contact with the drive lever 71 by a torsion spring, is a relatively mature existing structure and will not be elaborated upon here.

[0030] The working principle of this utility model:

[0031] Before use, open the cover plate 4 and place the titanium nails 3 into the respective receiving slots 21, then close the cover plate 4. During use, first push the slider 52. The slider 52, through the first spring, pushes the push block 51 forward. The push block 51 pushes the titanium nail 3 in contact with it forward to the next receiving slot 21. Other titanium nails 3, under the pushing action of the previous titanium nail 3, move sequentially to the next receiving slot 21. The titanium nail 3 closest to the nail outlet slot 22 moves into the nail outlet slot 22 under the pushing action of the previous titanium nail 3 and falls from the nail outlet slot 22 into the conical clamping cylinder 6. Then release the slider 52; under the restoring force of the first spring, the slider 52 returns to its original position. Pulling the trigger lever 8 again will push the active lever 71 to slide, thereby moving the push rod assembly as a whole. The movement of the push rod assembly will move the conical clamping cylinder 6 and the titanium nail 3 inside the conical clamping cylinder 6 to the outside of the machine housing 1. The conical clamping cylinder 6 will be aligned with the surgical site, and the surgeon will then use a screwdriver to fix the titanium nail 3 to the surgical site.

[0032] The device for continuously delivering titanium nails 3 provided by this utility model places multiple titanium nails 3 in the receiving groove 21 between two wave-shaped spring sheets 2, and then pushes each titanium nail 3 sequentially from the receiving groove 21 to the nail outlet groove 22 by the push block 51. After falling into the conical clamping cylinder 6, the push rod assembly pushes the conical clamping cylinder 6 and the titanium nails 3 out of the machine housing 1 together. This makes it convenient for the surgeon to align the titanium nails 3 with the surgical hole for fixation, thereby realizing continuous delivery of titanium nails 3 during surgery, which is more convenient to use and greatly reduces the risk of titanium nails 3 falling off.

[0033] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions and substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A device for continuously conveying titanium nails (3), characterized in that, The device includes a housing (1), which has a top-opening receiving cavity. Inside the receiving cavity are two wave-shaped spring pieces (2), which are in close contact with the inner wall of the receiving cavity. Multiple troughs of the two wave-shaped spring pieces (2) are respectively arranged opposite each other to form multiple receiving grooves (21) and a nail outlet groove (22). Multiple peaks of the two wave-shaped spring pieces (2) are respectively arranged opposite each other to form multiple limiting parts (23). Titanium nails (3) are placed in the receiving grooves (21), and a cover plate (4) is detachably connected to the top opening of the receiving cavity. A pusher block (3) is slidably arranged inside the receiving cavity. 51) The housing (1) is provided with a slider (52) for driving the push block (51) to slide. The push block (51) pushes each of the titanium nails (3) to move sequentially from the receiving groove (21) to the nail outlet groove (22). A conical clamping cylinder (6) is provided below the nail outlet groove (22). The titanium nails (3) fall from the nail outlet groove (22) into the conical clamping cylinder (6). A push rod assembly is slidably provided on the housing (1). The conical clamping cylinder (6) is connected to the push rod assembly. The push rod assembly can push the conical clamping cylinder (6) out of the housing (1).

2. The apparatus for continuously conveying titanium nails (3) according to claim 1, characterized in that, The titanium nail (3) includes a titanium nail (3) rod and a titanium nail (3) cap. The diameter of the receiving groove (21) is larger than the diameter of the titanium nail (3) rod but smaller than the diameter of the titanium nail (3) cap. The diameter of the nail outlet groove (22) is larger than the diameter of the titanium nail (3) cap.

3. The apparatus for continuously conveying titanium nails (3) according to claim 2, characterized in that, The slider (52) is slidably disposed on the side wall of the housing (1), and the slider (52) is fixedly connected to the push block (51).

4. The apparatus for continuously conveying titanium nails (3) according to claim 2, characterized in that, The slider (52) is slidably disposed on the top of the housing (1). The housing (1) is provided with a spring groove (11). A first spring is provided in the spring groove (11). The first spring is connected between the slider (52) and the push block (51).

5. The apparatus for continuously conveying titanium nails (3) according to claim 3 or 4, characterized in that, The contact surface between the pusher (51) and the titanium nail (3) is an arc surface.

6. The apparatus for continuously conveying titanium nails (3) according to claim 1, characterized in that, The bottom of the housing (1) is provided with a slide groove (12), and the push rod assembly is disposed in the slide groove (12); the push rod assembly includes: a driving rod body (71), a first driven connecting rod (72), a second driven connecting rod (73), a third driven connecting rod (74), a fourth driven connecting rod (75), and a second spring (76); a limiting block (13) is provided in the slide groove (12), the first end of the driving rod body (71) passes through the limiting block (13), and the end of the first end of the driving rod body (71) abuts against the limiting block (13) with a third spring (77), and the second end of the driving rod body (71) abuts against the first end of the first driven connecting rod (72) and the first end of the second driven connecting rod (73). The first driven link (72) is hinged to the second end of the third driven link (74), the second end of the second driven link (73) is hinged to the first end of the fourth driven link (75), the third driven link (74) and the fourth driven link (75) are hinged at the middle, and the second spring (76) is connected between the third driven link (74) and the fourth driven link (75); the conical clamping cylinder (6) includes two semi-circular cylinders, which are respectively connected to the second end of the third driven link (74) and the second end of the fourth driven link (75), and the two semi-circular cylinders are clamped under the action of the second spring (76).

7. The apparatus for continuously conveying titanium nails (3) according to claim 6, characterized in that, The third spring (77) is sleeved on the first end of the active rod (71).

8. The apparatus for continuously conveying titanium nails (3) according to claim 6, characterized in that, A trigger lever (8) is rotatably connected to the bottom of the housing (1). The first end of the trigger lever (8) abuts against the first end of the active lever (71). The first end of the trigger lever (8) is located outside the housing (1).

9. The apparatus for continuously conveying titanium nails (3) according to claim 8, characterized in that, A torsion spring is provided between the trigger lever (8) and the housing (1).

10. The apparatus for continuously conveying titanium nails (3) according to claim 1, characterized in that, The cover plate (4) is fastened to the top opening of the receiving cavity by a snap fastener.

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