A slip ring assembly for a hemostatic clip for an endoscope

Abstract

The utility model belongs to endoscope technical field discloses a kind of slip ring assemblies of hemostatic clamp for endoscope, including inner core, the middle part of the inner core is provided with through-hole, slidingly connected with sliding core in the through-hole, the sliding core is used for the fixation of cable, the top of the sliding core is rotatably connected with threaded rod by bearing, the top of the inner core is fixedly connected with support plate, the top of the threaded rod passes the threaded hole being set on support plate and extends to its top, the top of the threaded rod is fixedly connected with knob, the outer surface of the threaded rod is threadedly equipped with lock nut. The application can drive threaded rod to rotate by rotating knob, the threaded hole of support plate limits threaded rod, drive sliding core to slide up and down in the through-hole of inner core, adjust the opening width precision of hemostatic clamp by cable fixed on sliding core, prevent tissue tearing caused by excessive clamping, improve surgical safety and efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a slip ring assembly for an endoscope hemostatic clip. Background Technology

[0002] A hemostatic clip is a device that is inserted into a body cavity using an endoscope. The principle is that when the hemostatic clip reaches the target tissue, it uses the mechanical force of the clip to clamp the tissue wound or blood vessel to stop the bleeding. After the wound heals, the clip head will fall off naturally and be excreted from the body through the digestive tract. It has the characteristics of minimal trauma, fast hemostasis, few complications, and definite curative effect.

[0003] For example, CN108703782B discloses a handle assembly for a hemostatic clip, including an operating rod with an axial groove and a slip ring slidably disposed on the operating rod. The slip ring is used to drive the cable. The operating rod has outwardly protruding teeth, and the slip ring has a groove that cooperates with the teeth. This patent uses the arrangement of the teeth and groove to prevent the slip ring from moving forward, avoiding the risk that the exposed gap in the body cavity caused by the medical staff's misoperation of the slip ring will directly puncture the soft tissue, thus ensuring the safety of the operation.

[0004] In existing technologies, the sliding ring of the hemostatic clip handle is manipulated to adjust the opening degree of the hemostatic clip and release it after the tissue clamping action. However, the current method relies on the surgeon's feel to adjust the opening degree, which requires the surgeon to repeatedly perform the opening and closing action. Furthermore, the quality of hemostatic clips may vary from batch to batch, which may lead to the hemostatic clip getting stuck or the clip fragments falling off after the surgeon has tried to open and close the hemostatic clip multiple times. In view of this, a sliding ring assembly for endoscopic hemostatic clips has been designed. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a slip ring assembly for an endoscopic hemostatic clip, which can adjust the opening accuracy of the hemostatic clip, prevent excessive clamping and tissue tearing, and improve surgical safety and efficiency.

[0006] The technical solution of this utility model is: a slip ring assembly for an endoscope hemostatic clip, the slip ring assembly being slidably mounted on the operating rod of the hemostatic clip, including an inner core, a through hole being provided through the middle of the inner core, a sliding core being slidably connected in the through hole, the sliding core being used for fixing the cable;

[0007] The top of the sliding core is rotatably connected to a threaded rod via a bearing, the top of the inner core is fixedly connected to a support plate, the top of the threaded rod passes through a threaded hole in the support plate and extends to its top, and a knob is fixedly connected to the top of the threaded rod.

[0008] In some embodiments, a locking nut is threaded onto the outer surface of the threaded rod, and the bottom of the locking nut abuts against the top of the support plate.

[0009] In some embodiments, grooves are provided on both inner walls of the through hole along its axial direction, and sliders are fixedly connected to both outer walls of the slide core, with the sliders slidably connected inside the grooves.

[0010] In some embodiments, slots are provided on both sides of the outer surface of the inner core, and the slots are adapted to the teeth provided on the operating lever.

[0011] In some embodiments, the longitudinal section of the slot is semi-circular.

[0012] In some embodiments, connecting blocks are fixedly connected to both sides of the inner core, and a slip ring sleeve is fixedly connected to the outer side of the connecting blocks.

[0013] In some embodiments, a fixing seat is fixedly connected to the bottom of the sliding core, and the fixing seat is provided with a fixing hole for fixing and connecting the cable.

[0014] In some embodiments, the outer surface of the knob is provided with anti-slip texture, which is wavy or serrated.

[0015] In some embodiments, a lubrication layer is provided between the slide core and the inner wall of the through hole. The lubrication layer is formed of grease or lubricating oil to reduce the friction between the slide core and the inner wall of the through hole.

[0016] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0017] In this invention, rotating the knob can drive the threaded rod to rotate. Under the limitation of the threaded hole on the support plate, the threaded rod drives the sliding core to slide up and down in the through hole of the inner core. The opening accuracy of the hemostatic clip is adjusted by the cable fixed on the sliding core, which prevents excessive clamping and tissue tearing, thereby improving the safety and efficiency of the operation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 Schematic diagram of hemostatic clip structure;

[0020] Figure 2 This is a schematic diagram of the slip ring assembly structure for hemostatic clips according to this utility model;

[0021] Figure 3 This is a cross-sectional view of the slip ring assembly structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the inner core structure of this utility model;

[0023] Figure 5 This is a cross-sectional view of the inner core structure of this utility model.

[0024] In the attached image:

[0025] 100. Slip ring assembly; 101. Inner core; 102. Through hole; 103. Slip core; 104. Threaded rod; 105. Support plate; 106. Knob; 107. Locking nut; 108. Slide groove; 109. Slider; 110. Slot; 111. Connecting block; 112. Slip ring sleeve. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0027] In existing technology, after the hemostatic clip enters the body's natural cavity through the endoscope's clamping channel, the surgeon generally judges the size and location of the lesion based on the images captured by the endoscope lens. Then, the surgeon manipulates the sliding ring of the hemostatic clip handle to adjust the opening of the hemostatic clip and release it after the tissue clamping action. However, currently, the opening adjustment relies on the surgeon's feel, which requires the surgeon to repeatedly perform opening and closing actions. Furthermore, the quality of hemostatic clip products may vary due to different batches, which may lead to the hemostatic clip getting stuck or the clip fragments falling off after the surgeon has tried to open and close the hemostatic clip multiple times.

[0028] This application is described below with reference to the accompanying drawings and specific embodiments:

[0029] This utility model provides a slip ring assembly for a hemostatic clip for endoscopy. By rotating the knob 106, the threaded rod 104 can be rotated. Under the limitation of the threaded hole on the support plate 105, the threaded rod 104 drives the sliding core 103 to slide up and down in the through hole 102 of the inner core 101. The opening accuracy of the hemostatic clip is adjusted by the pull cable fixed on the sliding core 103, which prevents excessive clamping and tissue tearing, and improves the safety and efficiency of the operation.

[0030] Specifically:

[0031] like Figure 1 , Figure 4and Figure 5 As shown, a slip ring assembly for an endoscopic hemostatic clip is slidably mounted on the operating rod of the hemostatic clip. The assembly includes an inner core 101, a through hole 102 through the middle of the inner core 101, and a sliding core 103 slidably connected within the through hole 102. The sliding core 103 is used to fix the cable.

[0032] A threaded rod 104 is rotatably connected to the top of the sliding core 103 via a bearing. A support plate 105 is fixedly connected to the top of the inner core 101. The top of the threaded rod 104 passes through a threaded hole in the support plate 105 and extends to its top. A knob 106 is fixedly connected to the top of the threaded rod 104. In use, no additional tools are needed; simply rotating the knob 106 with your finger will rotate the threaded rod 104. By controlling the rotation of the threaded rod 104, the opening accuracy of the hemostatic clip can be adjusted via a cable fixed to the sliding core 103.

[0033] like Figure 4 and Figure 5 As shown, a locking nut 107 is threaded onto the outer surface of the threaded rod 104. The bottom of the locking nut 107 abuts against the top of the support plate 105. After the position of the cable is adjusted, the locking nut 107 is tightened, and the bottom of the locking nut 107 tightly abuts against the top of the support plate 105 to prevent the threaded rod 104 from rotating.

[0034] like Figure 3 and Figure 5 As shown, grooves 108 are provided on both inner walls of the through hole 102 along its axial direction, and sliders 109 are fixedly connected to both outer walls of the slide core 103. The sliders 109 are slidably connected inside the grooves 108. When the knob 106 rotates and drives the threaded rod 104 to rotate, the slide core 103 will slide up and down under the axial force of the threaded rod 104. At this time, the sliders 109 will slide up and down inside the grooves 108, so that the slide core 103 can only move in a straight line along the axial direction of the through hole 102, avoiding the slide core 103 from deviating or shaking during the sliding process.

[0035] like Figure 4As shown, the inner core 101 has slots 110 on both sides of its outer surface. The slots 110 are adapted to the teeth on the operating rod. When the clamp of the hemostatic clamp is at the target tissue in the body cavity, the medical staff pulls the slip ring assembly 100 backward along the operating rod, causing the cable to pull the clamp so that the clamp closes and clamps the target tissue. After the cable is subjected to a certain tension, the notch rod on the cable front connector will separate from the connector on the clamp seat, and the slip ring will also pass over the teeth on the operating rod and cause the teeth to fall into the slots 110 of the inner core 101. The teeth limit the movement of the slots 110 in the opposite direction, preventing the slip ring assembly 100 from moving forward. This avoids the risk of the notch rod exposed in the body cavity directly puncturing the soft tissue due to the medical staff's misoperation of the slip ring assembly 100, thus ensuring the safety of the operation.

[0036] like Figure 4 As shown, the longitudinal section of the slot 110 is semi-circular. The semi-circular longitudinal section of the slot 110 allows it to better fit with the teeth on the operating lever.

[0037] like Figure 2 and Figure 3 As shown, connecting blocks 111 are fixedly connected to both sides of the inner core 101, and a slip ring sleeve 112 is fixedly connected to the outer side of the connecting blocks 111. The connecting blocks 111 pass through the axial groove on the operating rod, while the slip ring sleeve 112 slides on the outer surface of the operating rod.

[0038] like Figure 3 and Figure 5 As shown, a fixing seat is fixedly connected to the bottom of the sliding core 103. The fixing seat has fixing holes for fixing and connecting the cable.

[0039] The outer surface of the knob 106 is provided with anti-slip texture, which is wavy or serrated, to facilitate the rotation of the knob 106.

[0040] A lubricating layer is provided between the sliding core 103 and the inner wall of the through hole 102. The lubricating layer is formed by grease or lubricating oil to reduce the friction between the sliding core 103 and the inner wall of the through hole 102 and improve the smoothness of sliding.

[0041] It should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A slip ring assembly for an endoscopic hemostatic clip, the slip ring assembly being slidably disposed on the operating rod of the hemostatic clip, characterized in that, include: The inner core (101) has a through hole (102) through its middle part, and a sliding core (103) is slidably connected in the through hole (102) for fixing the cable; The top of the sliding core (103) is rotatably connected to a threaded rod (104), the top of the inner core (101) is fixedly connected to a support plate (105), the top of the threaded rod (104) passes through a threaded hole opened on the support plate (105) and extends to its top, and the top of the threaded rod (104) is fixedly connected to a knob (106).

2. The slip ring assembly of the endoscopic hemostatic clip as described in claim 1, characterized in that, The outer surface of the threaded rod (104) is threaded with a locking nut (107), and the bottom of the locking nut (107) abuts against the top of the support plate (105).

3. The slip ring assembly of the endoscopic hemostatic clip as described in claim 1, characterized in that, The inner walls of both sides of the through hole (102) are provided with sliding grooves (108) along their axial direction, and the outer walls of both sides of the sliding core (103) are fixedly connected with sliders (109), and the sliders (109) are slidably connected inside the sliding grooves (108).

4. The slip ring assembly of the endoscopic hemostatic clip as described in claim 1, characterized in that, The inner core (101) has slots (110) on both sides of its outer surface, and the slots (110) are adapted to the teeth on the operating lever.

5. The slip ring assembly of the endoscopic hemostatic clip as described in claim 4, characterized in that, The longitudinal section of the slot (110) is semi-circular.

6. The slip ring assembly of the endoscopic hemostatic clip as described in claim 1, characterized in that, Both sides of the inner core (101) are fixedly connected to connecting blocks (111), and the outer side of the connecting blocks (111) is fixedly connected to slip ring sleeves (112).

7. The slip ring assembly of the endoscopic hemostatic clip as described in claim 1, characterized in that, The bottom of the sliding core (103) is fixedly connected to a fixing seat, and the fixing seat is provided with a fixing hole for fixing and connecting the cable.

8. The slip ring assembly of the endoscopic hemostatic clip as described in claim 1, characterized in that, The outer surface of the knob (106) is provided with anti-slip texture, which is wavy or sawtooth.

9. The slip ring assembly of the endoscopic hemostatic clip as described in claim 1, characterized in that, A lubricating layer is provided between the sliding core (103) and the inner wall of the through hole (102).

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