Quick-mounting hemostatic structure for choledochoscope

Abstract

This utility model relates to the field of medical devices and discloses a quick-release hemostasis structure for a cholangioscope, including a clamp assembly. The clamp assembly includes a first spring, with clamping arms fixedly connected to both ends of the first spring. Two second springs are fixedly connected to one of the clamping arms, and protrusions are fixedly connected to the second springs. The clamp assembly of this utility model is designed with a self-locking function and can repeatedly perform clamping and opening actions. When the clamping arm is clamped, the protrusion will engage in the through hole, keeping the clamping arm in a clamped state. When the clamp assembly is pushed outward, the second wedge will press the protrusion into the through hole, causing the protrusion to disengage from the through hole, thereby unlocking the clamping arm. This design helps to reduce the volume of the clamp component remaining in the patient's body. The mounting sleeve assembly achieves quick installation of the clamp assembly through a snap-fit ​​structure. After the clamp assembly is detached, a new clamp assembly can be replaced on the mounting sleeve assembly, thereby realizing the reuse of the hemostasis clamp delivery component and the operation component.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a quick-release hemostasis structure for a cholangioscope. Background Technology

[0002] An endoscope is a medical device that enters the body through natural cavities or incisions for observation, diagnosis, or treatment. A choledochoscope is a medical optical endoscope designed for endoscopic examination and surgery of the pancreas and bile ducts. A hemostatic clip is a hemostatic structure used in conjunction with a choledochoscope to clamp soft tissues within the bile duct. It mainly consists of three parts: a clip assembly, a delivery assembly, and a manipulation assembly. The clip assembly and delivery assembly can be inserted into the patient's body through the forceps channel of the medical choledochoscope. Surgical actions are performed through the manipulation assembly, and the surgical actions are then transmitted to the clip assembly through the delivery assembly, causing the clip assembly to respond and close the surgical wound for hemostasis. The clip assembly is then separated from the delivery assembly through the manipulation assembly, and finally, the clip assembly is left in the patient's body.

[0003] Existing hemostatic clips, as shown in Chinese patents with publication numbers CN117017407B, CN222549271U, and CN220442701U, all use a sleeve outside the clip as the hemostatic structure to keep the clip in a clamping state. However, the sleeve remains inside the patient's body along with the clip, resulting in a large volume of the remaining component, which interferes with subsequent medical operations. In addition, existing hemostatic clips are generally designed for single use. Once the delivery component is separated from the clip component, a new clip component cannot be quickly installed on the delivery component manually. Therefore, the delivery component and the manipulation component must be discarded. Since multiple hemostatic clips are often used in a single operation, this defect greatly increases the cost of consumables for medical operations and correspondingly increases the economic burden on patients. Utility Model Content

[0004] To address the technical problems of existing hemostatic clips, such as the excessive size of components remaining in the patient's body due to the sleeve locking the clip head, which affects operation, and the inability to replace the clip head of existing hemostatic clips, which prevents the reuse of other components, this utility model provides a quick-release hemostatic structure for cholangioscopy.

[0005] This utility model is achieved by the following technical solution: a quick-release hemostasis structure for a cholangioscope, including a clamp assembly. The clamp assembly includes a first spring piece, and clamping arms are fixedly connected to both ends of the first spring piece. Two second spring pieces are fixedly connected to one clamping arm, and a protrusion is fixedly connected to the second spring piece. A boss is fixedly connected to the protrusion. A first connecting piece is fixedly connected to the other clamping arm at the position corresponding to the second spring piece. A through hole is opened on the first connecting piece at the position corresponding to the protrusion.

[0006] Through the above technical solution, the clamp assembly uses the first spring to provide a reset spring force for the clamp arm, so that the clamp arm can open. After the clamp arm is clamped, the state is locked by the protrusion cooperating with the through hole on the first connecting piece. The second spring is used to provide a reset spring force for the protrusion.

[0007] As a further improvement to the above solution, the clamp assembly is equipped with an installation sleeve assembly, which includes a sleeve, a first through groove, a third spring piece, a first wedge, a second through groove, a second wedge, a baffle, a connecting block, a push rod, a push block, a fourth spring piece, an inclined plate, a second connecting piece, a third wedge, and an adapter pipe. The push rod is located at the bottom end of the first spring piece, and a connecting block is fixedly connected to the bottom end of the push rod. A fourth spring piece is fixedly connected to both outer walls of the connecting block. An inclined plate is fixedly connected to one end of the fourth spring piece, and a second connecting piece is fixedly connected to the other end of the inclined plate. A third wedge is fixedly connected to the second connecting piece, and the third wedge is engaged with the first spring piece. Limiting elements are provided on both sides of the third wedge, and the limiting elements are fixedly connected to the first spring piece.

[0008] Through the above technical solution, the push rod is used to support the first spring piece, the connecting block is used to install the fourth spring piece, the fourth spring piece is used to provide a reset spring force for the inclined plate, the inclined plate is used to install the second connecting piece, the second connecting piece is used to install the third wedge block, the third wedge block is used to cooperate with the push rod to limit the first spring piece, and the limiting component is used to limit the third wedge block, thereby improving the stability of the snap-fit ​​part.

[0009] As a further improvement to the above solution, a first through groove is provided on the sleeve at the position corresponding to the fourth spring piece, a third spring piece is fixedly connected in the first through groove, and the fourth spring piece is slidably connected to the third spring piece. Baffles are provided on both sides of the fourth spring piece, and the baffles are fixedly connected to the third spring piece.

[0010] With the above technical solution, the first through groove is used to accommodate the third spring piece, and the third spring piece limits the fourth spring piece through the baffle.

[0011] As a further improvement to the above solution, a push block is fixedly connected to the bottom of the connecting block, and a second through groove is opened on the third spring plate at the position corresponding to the fourth spring plate, and a first wedge is provided at the bottom of the second through groove.

[0012] Through the above technical solution, the pusher is used to push the first wedge, thereby forcing the third spring to open, and the third spring to accommodate the fourth spring through the second through groove.

[0013] As a further improvement to the above solution, a second wedge is provided at the top of the inclined plate, and the second wedge is fixedly connected to the third spring plate.

[0014] With the above technical solution, the second wedge is used to press the boss into the through hole when the chuck assembly moves outward, so that the boss disengages from the through hole, and the clamping arm will open under the action of the first spring, thereby unlocking the chuck assembly.

[0015] As a further improvement to the above solution, the bottom end of the sleeve is hinged to a connecting pipe, a spring tube is fixedly connected to the connecting pipe, an operating line is provided inside the spring tube, and the operating line is fixedly connected to the push block.

[0016] Through the above technical solution, the adapter tube is used to connect the sleeve and the spring tube, the spring tube is used to connect the operating component, and the operating line is used to transmit the action of the operating component to the push block.

[0017] Compared with the prior art, the advantages of this utility model are as follows: The clamping assembly of this utility model is designed with a self-locking function and can repeatedly perform clamping and opening actions. When the clamping arm is clamped, the protrusion will be inserted into the through hole, so that the clamping arm is kept in the clamping state. When the clamping assembly is pushed outward, the second wedge will press the protrusion into the through hole, so that the protrusion is disengaged from the through hole, thereby unlocking the clamping arm. This design helps to reduce the volume of the clamping component left in the patient's body. The mounting sleeve assembly realizes quick installation of the clamping assembly through a snap-fit ​​structure. After the clamping assembly is disengaged, a new clamping assembly can be replaced on the mounting sleeve assembly, thereby realizing the reuse of the hemostatic clamp delivery component and the manipulation component. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the overall three-dimensional cross-sectional structure of this utility model;

[0020] Figure 3 for Figure 2 Enlarged view of the structure of region A in the middle;

[0021] Figure 4 This is a schematic diagram of the main sectional view of the sleeve structure of this utility model.

[0022] Explanation of key symbols:

[0023] 1. Chuck assembly; 11. First spring; 12. Limiting component; 13. Clamping arm; 14. Second spring; 15. Protrusion; 16. Boss; 17. First connecting piece; 18. Through hole; 2. Mounting sleeve assembly; 21. Sleeve; 211. First through groove; 212. Third spring; 213. First wedge; 214. Second through groove; 215. Second wedge; 216. Baffle; 22. Connecting block; 221. Push rod; 222. Push block; 223. Fourth spring; 224. Inclined plate; 225. Second connecting piece; 226. Third wedge; 23. Adapter tube; 3. Operating line; 4. Spring tube. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0025] Example 1:

[0026] Please combine Figure 1 - Figure 4This embodiment provides a quick-release hemostasis structure for a cholangioscope, including a clamp assembly 1. The clamp assembly 1 includes a first spring 11, with clamping arms 13 fixedly connected to both ends of the first spring 11. Two second springs 14 are fixedly connected to one clamping arm 13, with a protrusion 15 fixedly connected to each second spring 14 and a boss 16 fixedly connected to each protrusion 15. A first connecting piece 17 is fixedly connected to the other clamping arm 13 at a position corresponding to the second springs 14. A through hole 18 is provided on the first connecting piece 17 at a position corresponding to the protrusion 15. The clamp assembly 1 utilizes the first spring 11 to provide a reset elastic force to the clamping arms 13, allowing the clamping arms 13 to open. After clamping, the through hole 18... The protrusion 15 engages with the through hole 18 on the first connecting piece 17 for state locking, and the second spring piece 14 provides a reset spring force for the protrusion 15; the chuck assembly 1 is equipped with an installation sleeve assembly 2, which includes a sleeve 21, a first through groove 211, a third spring piece 212, a first wedge 213, a second through groove 214, a second wedge 215, a baffle 216, a connecting block 22, a push rod 221, a push block 222, a fourth spring piece 223, an inclined plate 224, a second connecting piece 225, a third wedge 226, and an adapter pipe 23. The push rod 221 is located at the bottom end of the first spring piece 11, and the bottom end of the push rod 221 is fixedly connected to the connecting block 22. The outer walls of the two sides of the connecting block 22 are... A fourth spring plate 223 is fixedly connected to each of the first spring plates 11. One end of the fourth spring plate 223 is fixedly connected to a ramp 224, and the other end of the ramp 224 is fixedly connected to a second connecting piece 225. A third wedge block 226 is fixedly connected to the second connecting piece 225 and engages with the first spring plate 11. Limiting elements 12 are provided on both sides of the third wedge block 226 and are fixedly connected to the first spring plate 11. A top rod 221 supports the first spring plate 11. A connecting block 22 is used to install the fourth spring plate 223. The fourth spring plate 223 provides a reset spring force for the ramp 224. The ramp 224 is used to install the second connecting piece 225. The second connecting piece 225 is used to install... The third wedge 226 is used to cooperate with the top rod 221 to limit the first spring piece 11. The limiting member 12 is used to limit the third wedge 226 to improve the stability of the snap-fit ​​part. The sleeve 21 is provided with a first through groove 211 at the position corresponding to the fourth spring piece 223. The third spring piece 212 is fixedly connected in the first through groove 211, and the fourth spring piece 223 is slidably connected to the third spring piece 212. Baffles 216 are provided on both sides of the fourth spring piece 223, and the baffles 216 are fixedly connected to the third spring piece 212. The first through groove 211 is used to accommodate the third spring piece 212, and the third spring piece 212 limits the fourth spring piece 223 through the baffles 216.A push block 222 is fixedly connected to the bottom end of the connecting block 22. A second through groove 214 is provided on the third spring piece 212 at the position corresponding to the fourth spring piece 223. A first wedge 213 is provided at the bottom end of the second through groove 214. The push block 222 is used to push the first wedge 213, thereby forcing the third spring piece 212 to open. The third spring piece 212 accommodates the fourth spring piece 223 through the second through groove 214. A second wedge 215 is provided at the top end of the inclined plate 224, and the second wedge 215 is fixedly connected to the third spring piece 212. The second wedge 215 is used for the clamp assembly. When the 15 moves outward, the boss 16 is pressed into the through hole 18, causing the boss 15 to disengage from the through hole 18. Under the action of the first spring piece 11, the clamping arm 13 will open, thereby unlocking the clamping assembly 1. The bottom end of the sleeve 21 is hinged to a connecting tube 23, and a spring tube 4 is fixedly connected to the connecting tube 23. An operating line 3 is provided inside the spring tube 4 and is fixedly connected to the push block 222. The connecting tube 23 is used to connect the sleeve 21 and the spring tube 4, the spring tube 4 is used to connect the operating component, and the operating line 3 is used to transmit the action of the operating component to the push block 222.

[0027] The implementation principle of a quick-release hemostasis structure for a cholangioscope in this application embodiment is as follows: When using this utility model, the spring tube 4 is inserted into the human body through the instrument channel of the cholangioscope. The operating line 3 is operated by the operating component, and the operating line 3 transmits the action to the push block 222. When the push block 222 moves closer to the spring tube 4, the push block 222 will drive the fourth spring piece 223 through the connecting block 22. The fourth spring piece 223 drives the second connecting piece 225 through the inclined plate 224. The second connecting piece 225 drives the first spring piece 11 through the third wedge block 226. During this process, the fourth spring piece 223 slides along the third spring piece 212 and is limited by the baffle 216. When the first spring piece 11 enters the sleeve 21, it clamps... When the arm 13 is squeezed by the inner wall of the sleeve 21, it will overcome the elasticity of the first spring plate 11 and gradually close. When the boss 16 passes the second wedge 215, the clamping arm 13 will be fully closed and clamped. At this time, the protrusion 15 on the second spring plate 14 will be inserted into the through hole 18 on the first connecting piece 17, so that the clamping arm 13 remains clamped. If the push block 222 is moved away from the spring tube 4 at this time, when the chuck assembly 1 passes the second wedge 215, the second wedge 215 will press the boss 16 into the through hole 18, so that the protrusion 15 is disengaged from the through hole 18. Under the action of the first spring plate 11, the clamping arm 13 will open and continue to apply a pushing force to the boss 16 through the inclined part of the boss 16, thereby clamping the boss. 16 is pushed out of the through hole 18, and as the clamping arm 13 opens, the boss 16 and the through hole 18 are misaligned. Therefore, the elastic force of the second spring piece 14 cannot press the boss 15 back into the through hole 18, thereby releasing the clamping state of the clamping arm 13. If the push block 222 continues to move closer to the spring tube 4, when the fourth spring piece 223 reaches the position of the second through groove 214, under the action of elasticity, the fourth spring piece 223 will open and enter the second through groove 214. The third wedge block 226 will release the first spring piece 11 as the fourth spring piece 223 opens. The push block 222 continues to move and will push the first wedge block 213. The first wedge block 213 will drive the third spring piece 212 into the first through groove 211. The opening increases the distance between the two second wedges 215, allowing the spring tube 4 to be removed, leaving only the clamp assembly 1 inside the body. When replacing the clamp assembly 1, the first spring piece 11 can be pressed towards the push rod 221, pushing the third wedge 226 away. Then, under the elastic action of the fourth spring piece 223, the third wedge 226 returns to its original position, working with the limiting member 12 and the push rod 221 to hold the first spring piece 11 in place, thus completing the installation of the clamp assembly 1. The adapter tube 23 connects the sleeve 21 and the spring tube 4, allowing the sleeve 21 to rotate relative to the spring tube 4. The operating components of the cholangioscope and the hemostatic clamp are mature existing technologies, so they will not be described in detail here.

[0028] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A quick-release hemostatic structure for a cholangioscope, comprising a clamp assembly (1), characterized in that, The clamp assembly (1) includes a first spring plate (11), and clamping arms (13) are fixedly connected to both ends of the first spring plate (11). Two second spring plates (14) are fixedly connected to one of the clamping arms (13). A protrusion (15) is fixedly connected to the second spring plate (14), and a boss (16) is fixedly connected to the protrusion (15). A first connecting piece (17) is fixedly connected to the other clamping arm (13) at the position corresponding to the second spring plate (14). A through hole (18) is opened on the first connecting piece (17) at the position corresponding to the protrusion (15).

2. The quick-release hemostasis structure for a cholangioscope as described in claim 1, characterized in that, The clamp assembly (1) is equipped with an installation sleeve assembly (2), which includes a sleeve (21), a first through groove (211), a third spring piece (212), a first wedge (213), a second through groove (214), a second wedge (215), a baffle (216), a connecting block (22), a push rod (221), a push block (222), a fourth spring piece (223), an inclined plate (224), a second connecting piece (225), a third wedge (226), and a connecting pipe (23). The push rod (221) is located at the bottom end of the first spring piece (11). 21) A connecting block (22) is fixedly connected to the bottom end. A fourth spring plate (223) is fixedly connected to both outer walls of the connecting block (22). A slope plate (224) is fixedly connected to one end of the fourth spring plate (223). A second connecting piece (225) is fixedly connected to the other end of the slope plate (224). A third wedge (226) is fixedly connected to the second connecting piece (225). The third wedge (226) is snapped onto the first spring plate (11). Limiting elements (12) are provided on both sides of the third wedge (226). The limiting elements (12) are fixedly connected to the first spring plate (11).

3. The quick-release hemostasis structure for a cholangioscope as described in claim 2, characterized in that, A first through groove (211) is provided on the sleeve (21) at the position corresponding to the fourth spring piece (223). A third spring piece (212) is fixedly connected in the first through groove (211), and the fourth spring piece (223) is slidably connected to the third spring piece (212). Baffles (216) are provided on both sides of the fourth spring piece (223), and the baffles (216) are fixedly connected to the third spring piece (212).

4. The quick-release hemostasis structure for a cholangioscope as described in claim 2, characterized in that, The bottom end of the connecting block (22) is fixedly connected to a push block (222), and a second through groove (214) is opened on the third spring plate (212) at the position corresponding to the fourth spring plate (223). A first wedge block (213) is provided at the bottom end of the second through groove (214).

5. The quick-release hemostasis structure for a cholangioscope as described in claim 2, characterized in that, The top of the inclined plate (224) is provided with a second wedge (215), and the second wedge (215) is fixedly connected to the third spring plate (212).

6. The quick-release hemostasis structure for a cholangioscope as described in claim 3, characterized in that, The sleeve (21) is hinged to the bottom end with a connecting pipe (23), and a spring tube (4) is fixedly connected to the connecting pipe (23). An operating line (3) is provided inside the spring tube (4), and the operating line (3) is fixedly connected to the push block (222).

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