Foreign matter clamping device
By designing a foreign body clamping device with elastic jaws and telescopic structures, the problems of complex structure and low reliability of existing instruments are solved, and the effect of simplifying operation and reducing costs is achieved, which is suitable for the clamping of foreign bodies in the urinary system.
Patent Information
- Application Number
- CN202421818683.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2024-07-05
- Filing Date
- 2024-07-30
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-07-30
AI Technical Summary
The existing urinary system has complex structures of foreign body clamping devices, which leads to cumbersome use, low reliability and high cost, and is prone to wear and deformity when reused.
A foreign object clamping device consisting of a handle assembly, an external assembly and an internal assembly is designed to achieve clamping action using elastic jaws and telescopic structures. The connecting rod is formed by winding of spring wires, which is flexible and elastic, adapted to bends in the body, and can be used as a one-time use.
It simplifies the operation process, improves the reliability and safety of clamping, reduces production costs, reduces the work burden of medical staff, and avoids wear and tear problems caused by reuse.
Smart Images
Figure CN223169797U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a medical device, in particular to a clamping medical device for clamping foreign bodies in the urinary system. Background Art
[0002] The urinary system is an important part of the human body and is composed of organs and tissues such as the adrenal gland, kidneys, ureters, bladder, prostate, and urethra. Once these organs and tissues are diseased, a series of diseases will be caused. Common diseases of the urinary system mainly include adrenal tumors, pheochromocytomas, adrenal cortical hyperplasia, renal cancers, renal cysts, renal tuberculosis, kidney stones, perinephric abscesses, ureteral strictures, ureteral stones, ureteral cancers, ureteral injuries, congenital ureteral malformations, etc., as well as bladder diseases such as bladder stones and bladder cancers, and urethral diseases such as urethral strictures, benign prostatic hyperplasia, and prostatitis. After surgery for urinary system diseases, a double-J tube is generally placed between the bladder and the kidneys to support the ureter and drain urine from the ureter. The double-J tube needs to be removed from the body after being placed for a period of time. This process of removing the double-J tube from the body needs to be achieved by using instruments. Currently, the instruments used for such operations mainly include two types of products: link types and forceps types.
[0003] The structures of these two existing foreign body clamping devices are relatively complex, so the cost is relatively high and they need to be reused. This current situation causes the following problems:
[0004] 1. Since they need to be reused, complex sterilization operations need to be carried out on the instruments before and after use, increasing the burden on medical staff;
[0005] 2. Due to the complex structure, the operation process of the instruments during use is complex, and at the same time, the clamping force is small and the reliability of the clamping action is low;
[0006] 3. The complex structure combined with repeated use is more likely to cause problems such as wear and deformation of the instruments, which may further lead to instrument failure. Summary of the Utility Model
[0007] In order to solve the problems of the existing foreign body clamping instruments after urinary system surgery, such as complex structure and the resulting cumbersome use and low reliability, the utility model provides a foreign body clamping device.
[0008] The technical solution of the utility model is as follows:
[0009] A foreign object clamping device includes a handle assembly, an external assembly and an internal assembly; the external assembly includes an outer sleeve; a telescopic structure is provided between the handle assembly and the external assembly to enable the external assembly to telescopically move along the axis of the outer sleeve; the internal assembly includes a connecting rod, and a first end of the connecting rod is connected to the handle assembly; the connecting rod is disposed inside the outer sleeve, and the axis of the connecting rod is parallel to or coincides with the axis of the outer sleeve; an elastic clamping jaw is provided at a second end of the connecting rod; when the elastic clamping jaw is located outside the outer sleeve, the elastic clamping jaw is in an open state; when at least a part of the elastic clamping jaw is located inside the outer sleeve, the elastic clamping jaw is in a clamped state; the connecting rod is formed by repeatedly cross-winding at least two spring wires.
[0010] Optionally, at the second end of the connecting rod, the remaining uncross-wound part of the spring wire forms the elastic clamping jaw.
[0011] Optionally, at the root of the elastic clamping jaw, the spring wires are fixedly connected to each other.
[0012] Optionally, on the inner wall of the outer sleeve adjacent to the second end and in contact with the elastic clamping jaw, a wear-resistant protective layer is provided.
[0013] Optionally, a guiding groove or a guiding notch is provided at the part of the wear-resistant protective layer in contact with the elastic clamping jaw.
[0014] Optionally, a first gripping structure is provided on the handle assembly, and a second gripping structure is provided on the external assembly; the first gripping structure and the second gripping structure are respectively connected to two sides of the telescopic structure.
[0015] Optionally, the first gripping structure includes a closed loop structure or a semi-closed structure.
[0016] Optionally, the second gripping structure includes a clamping groove structure.
[0017] Optionally, the foreign object clamping device includes an elastic U-shaped structure; parts of the U-shaped structure adjacent to both ends of the U-shaped structure are respectively the first gripping structure and the second gripping structure.
[0018] Optionally, an outer sleeve disassembly and assembly structure is provided on the outer sleeve; and / or a connecting rod disassembly and assembly structure that matches each other is provided on the handle assembly and the connecting rod respectively.
[0019] Optionally, the telescopic structure includes a corrugated pipe and / or a spring.
[0020] The technical effects of the present utility model are as follows:
[0021] The foreign object clamping device of the present utility model includes a handle assembly, an external assembly, and an internal assembly. The outer sleeve of the external assembly is sleeved outside the connecting rod of the internal assembly. The second end of the connecting rod that can extend into the surgical site is provided with elastic clamping jaws. When the elastic clamping jaws extend out of the outer sleeve, they are in an open state. When the elastic clamping jaws retract or partially retract into the outer sleeve, due to the binding force exerted by the outer sleeve from the outside of the elastic clamping jaws, the elastic clamping jaws are in a clamped state, and thus the elastic clamping jaws can be used to clamp foreign objects in the body. Only by driving the elastic clamping jaws to extend out of or retract into the outer sleeve can the elastic clamping jaws complete the action of clamping foreign objects. The operation of extending or retracting the elastic clamping jaws into or out of the outer sleeve can be realized only by operating the telescopic structure outside the body. In addition, since the connecting rod is made of spring wire wound, it has flexibility and elasticity, and can adapt to the bending requirements generated during the process of the foreign object clamping device extending into the body; at the same time, the connecting rod also has corresponding strength, which can avoid sudden problems such as breakage during bending and maintain the integrity of the connecting rod. It can be seen that the technical solution of the present utility model has a simple structure and high reliability in action execution. In addition, due to the simple structure of the technical solution of the present utility model, it can be mass-produced at low cost and can be used as a disposable product, thus eliminating the need for repeated sterilization and other operations, reducing the burden on medical staff, and achieving the purpose of the present utility model.
[0022] The further effects of the above optional methods will be described below in conjunction with specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a front view of the first embodiment of the foreign object clamping device of the present utility model.
[0024] Figure 2 is Figure 1 the top view of.
[0025] Figure 3 is Figure 1 an enlarged view of one end of the shown embodiment.
[0026] Figure 4 is Figure 1 an enlarged view of the other end of the shown embodiment.
[0027] Figure 5 It is a front view of the second embodiment of the foreign object clamping device of the present utility model.
[0028] Figure 6 is Figure 5 an enlarged view of one end of the shown embodiment.
[0029] The markings in the figures are explained as follows:
[0030] 101. Elastic clamping jaws; 102. Outer sleeve; 103. Handle assembly;
[0031] 201. Connecting rod;
[0032] 301. Root of elastic jaw;
[0033] 401. Second gripping structure; 402. Telescopic structure; 403. First gripping structure;
[0034] 501. Elastic jaw; 502. Outer sleeve; 503. Handle assembly;
[0035] 601. Second gripping structure; 602. Connecting rod; 603. First gripping structure; 604. Telescopic structure. Detailed implementation mode
[0036] The technical solution of the present utility model will be described in detail below in conjunction with the embodiments shown in the drawings.
[0037] As Figure 1 and Figure 2 shown, the foreign object clamping device includes a handle assembly 103, an outer sleeve 102, and a connecting rod 201. Among them, the outer sleeve 102 is a long tube, and the connecting rod 201 is a rod-shaped body coaxially arranged with the outer sleeve 102 and located inside the outer sleeve 102. The first end of the connecting rod 201 is connected to the handle assembly 103. The other end of the connecting rod 201 is provided with an elastic jaw 101.
[0038] As Figure 3 shown, the connecting rod 201 is a connecting rod formed by continuously and repeatedly cross-winding two spring wires. At the second end of the connecting rod 201, the remaining uncrossed spring wire part is inclined to the axis of the connecting rod 201 and the tail end of the spring wire part winds back towards the axis of the connecting rod 201 to form an elastic jaw 101. Since the spring wire has elasticity, the elastic jaw 101 can be in a clamped or open state respectively after being subjected to an external force. When the elastic jaw 101 is in an open state, the size of the open end is larger than the inner diameter of the outer sleeve 102. Combining Figure 1 with Figure 2 , when the elastic jaw 101 moves to the right along with the connecting rod 201 and at the same time the outer sleeve 102 moves to the left, the inner wall of the outer sleeve 102 can press against the outside of the elastic jaw 101, causing the elastic jaw 101 to make a clamping action; when the elastic jaw 101 moves to the left and at the same time the outer sleeve 102 moves to the right, the force exerted by the inner wall of the outer sleeve 102 on the outside of the elastic jaw 101 gradually decreases, causing the elastic jaw 101 to make an opening action. In other embodiments, the connecting rod can be formed by winding more spring wires, and the corresponding elastic jaw can be composed of the ends of 2 or more spring wires.
[0039] Due to the elasticity of the spring wire, there is a tendency for the spring wire winding of the connecting rod 201 to become loose. As a result, the elastic jaw 101 also has a tendency to be unable to maintain its jaw state. In this embodiment, at the root of the elastic jaw 101 (the root 301 of the elastic jaw), that is, at the last winding position of the two spring wires, the two spring wires are fixed by brazing, thus avoiding the problem of the spring wire winding of the connecting rod 201 becoming loose. In other embodiments, other existing fixing processes can also be used to fix the spring wire, such as bonding, which will not be elaborated here.
[0040] The outer sleeve is made of a material with a certain flexibility. In other embodiments, on the inner wall of the end of the outer sleeve 102 adjacent to the elastic jaw 101, a wear-resistant layer, such as a metal ring, is provided at the part that touches the elastic jaw 101 to protect the main body of the outer sleeve 102. In other embodiments, a guiding groove or a guiding notch is further provided on the wear-resistant layer, so that the clamping arm of the elastic jaw 101 can move along the guiding groove or the guiding notch, which is effective when it is necessary to prevent the elastic jaw 101 from rotating around the axis of the connecting rod 201.
[0041] Figure 4 Shows the specific structure of this embodiment at the end of the handle assembly 103. One end of the connecting rod 201 is connected to the handle assembly 103. As Figure 4 shown, the handle assembly 103 includes a first gripping structure 403. The left end of the first gripping structure 403 is connected to the right end of the telescopic structure 402. The right end of the second gripping structure 401 is connected to the left end of the telescopic structure 402. The second gripping structure 401 is also connected to the outer sleeve 102. Among them, the connecting rod 201 passes through the second gripping structure 401 and the telescopic structure 402 and is connected to the first gripping structure 403. The first gripping structure 403 and the second gripping structure 401 are respectively arranged on both sides of the telescopic structure 402, and both the first gripping structure 403 and the second gripping structure 401 are connected to the telescopic structure 402. In this embodiment, the telescopic structure 402 is a spring, and this spring can be telescoped along the axis direction of the connecting rod 201, so that the first gripping structure 403 and the second gripping structure 401 approach or move away from each other. In other embodiments, the telescopic structure can adopt a bellows structure with a telescopic function.
[0042] As Figure 4 shown, in this embodiment, the first gripping structure 403 is a closed ring. In other embodiments, a semi-closed ring structure can also be adopted. A groove that can be clamped by fingers is circumferentially arranged on the outer surface of the second gripping structure 401.
[0043] The following describes Figures 1 to 4 the working process of the embodiment shown to further elaborate the technical solution of the present invention.
[0044] Operation Figures 1 to 4When implementing the illustrated embodiment, the operator can insert the thumb into the ring of the first gripping structure 403, and grip the outer surface groove of the second gripping structure 401 with the index finger and middle finger. Through the cooperation of the three fingers, the telescopic structure 402 can be stretched or contracted, so that the first gripping structure 403 and the second gripping structure 401 move away from or close to each other. Since the first gripping structure 403 and the second gripping structure 401 are respectively connected to the outer sleeve 102 and the connecting rod 201, a relative displacement is generated between the connecting rod 201 and the outer sleeve 102 along the axis of the connecting rod 201. Furthermore, it drives the elastic jaw 101 to extend or retract from the outer sleeve 102, realizing the opening and clamping states of the elastic jaw 101.
[0045] Since the connecting rod 201 is made of spring wire wound, it has flexibility and elasticity, and can also maintain a certain strength to adapt to the bending requirements generated during the process of the foreign object clamping device extending into the body. Due to the protection of the outer sleeve 102, the movement of the connecting rod 201 will not cause friction with other tissues in the body. The production material cost of the connecting rod 201 is low, the winding production process is simple, and the processing cost is low. Therefore, it can be used as a disposable tool to reduce the working intensity of medical staff. At the same time, the structure of the present utility model is simple, which also makes the reliability higher.
[0046] Figure 5 and Figure 6 shows the second embodiment of the present utility model. Compared with Figures 1 to 4 the first embodiment shown, the structures of the connecting rod 602 and the outer sleeve 502 adopted in the second embodiment are the same, and the working processes of the connecting rod 602 (including the elastic jaw 501) and the outer sleeve 502 are also the same as those in the first embodiment, which will not be elaborated here. The difference between the second embodiment and the first embodiment lies in the handle assembly 503.
[0047] As Figure 5 and Figure 6 shown, the foreign object clamping device has a U-shaped elastic structure. One arm of the U-shaped elastic structure is the first gripping structure 603, and the other arm is the second gripping structure 601. The middle bent part of the U-shaped elastic structure is the telescopic structure 604. The connecting rod 602 passes through the second gripping structure 601 and is connected to the first gripping structure 603, and the second gripping structure 601 is connected to the outer sleeve 502. When operating the handle assembly 503, compress the two arms of the U-shaped elastic structure (i.e., the first gripping structure 603 and the second gripping structure 601) towards each other by hand, then the connecting rod 602 moves to the Figure 6 left side in Figure 6 , and the outer sleeve 502 moves to the Figure 6During the rightward movement in, the outer sleeve 502 moves towards Figure 6 During the leftward movement in, the elastic jaws (not shown in the figure) at the other end of the connecting rod 602 retract into the outer sleeve 502. The simple operation of the handle assembly 503 above can achieve the clamping and releasing actions of the elastic jaws.
[0048] The structure of the handle assembly 503 is simpler, the cost is lower, and it is easy to operate.
[0049] It should be noted that the above description is only a preferred embodiment of the present invention, and does not limit the patent protection scope of the present invention. The present invention can also be replaced by equivalent technologies. Therefore, any equivalent changes made by using the description and illustration content of the present invention, directly or indirectly applied to other related technical fields are included in the scope covered by the present invention.
Claims
1. A foreign object clamping device, characterized in that: It includes a handle assembly, an external component and an internal component; the external component includes an outer sleeve; a telescopic structure is provided between the handle assembly and the external component to enable the external component to expand and contract along the axis of the outer sleeve; the internal component includes a connecting rod, and a first end of the connecting rod is connected to the handle assembly; the connecting rod is arranged inside the outer sleeve, and the axis of the connecting rod is parallel or coincident with the axis of the outer sleeve; an elastic clamping jaw is arranged at a second end of the connecting rod; when the elastic clamping jaw is located outside the outer sleeve, the elastic clamping jaw is in an open state; when at least part of the elastic clamping jaw is located inside the outer sleeve, the elastic clamping jaw is in a clamped state; the connecting rod is formed by repeatedly cross-winding at least 2 spring wires.
2. The foreign object clamping device according to claim 1, characterized in that: At the second end of the connecting rod, the remaining un-cross-wound parts of the spring wires form the elastic clamping jaw.
3. The foreign object clamping device according to claim 2, characterized in that: At the root of the elastic clamping jaw, the spring wires are fixedly connected to each other.
4. The foreign object clamping device according to claim 1, wherein: On the inner wall of the outer sleeve adjacent to the second end and in contact with the elastic clamping jaw, a wear-resistant protective layer is provided.
5. The foreign object clamping device according to claim 4, characterized in that: On the part of the wear-resistant protective layer in contact with the elastic clamping jaw, a guiding groove or a guiding notch is provided.
6. The foreign object clamping device according to claim 1, characterized in that: A first gripping structure is provided on the handle assembly, and a second gripping structure is provided on the external component; the first gripping structure and the second gripping structure are respectively connected to both sides of the telescopic structure.
7. The foreign object clamping device according to claim 6, characterized in that: The first gripping structure includes a closed-loop structure or a semi-closed structure.
8. The foreign object clamping device according to claim 7, wherein: The second gripping structure includes a clamping groove structure.
9. The foreign object clamping device according to claim 6, characterized in that: It includes an elastic U-shaped structure; the parts of the U-shaped structure adjacent to both ends of the U-shaped structure are respectively the first gripping structure and the second gripping structure.
10. The foreign object clamping device according to claim 1, characterized in that: An outer sleeve disassembly and assembly structure is provided on the outer sleeve; and / or a connecting rod disassembly and assembly structure that matches each other is provided on the handle assembly and the connecting rod respectively.