In-vivo clot meshing structure

Abstract

The utility model discloses a kind of in-vivo blood clot cutting net structures, including the outer tube structure being cooperated with endoscope, the middle tube structure being arranged in outer tube structure and being cooperated with outer tube structure, and the inner core structure being arranged in middle tube structure;Wherein, the middle tube structure can be inserted or pulled out along outer tube structure, the inner core structure can be inserted or pulled out along middle tube structure.This application provides a kind of in-vivo blood clot cutting net structure, can be inserted into human body by the channel of endoscope, and can be deployed into adjustable angle's fishing net structure in human body, can effectively and quickly complete the fishing and cutting of large blood clot, and need not repeat extraction and insertion endoscope, that is, improve the cutting efficiency of large blood clot, also avoid the pain that repeat extraction and insertion endoscope brings to patient.

Description

Technical Field

[0001] This application relates to the field of medical devices, specifically to an in vivo blood clot cutting mesh structure. Background Technology

[0002] When performing endoscopic surgery on the digestive tract, it is common to encounter situations where there is bleeding in the digestive tract and blood clots. The presence of blood clots directly affects the observation effect of the endoscope and is not conducive to the operation. If the blood clots are small, they can be directly aspirated one by one through the forceps of the endoscope, so that the endoscope can better observe the internal condition for the operation. If the bleeding is large or the blood clots are large, it is no longer possible to aspirate the blood clots one by one through the forceps of the endoscope. The relevant medical staff generally adopt the following two methods to aspirate the blood clots: (1) Insert a cutting knife or other operating instrument through the forceps to cut the large blood clots into smaller blood clots little by little, and finally aspirate the small blood clots through the forceps; (2) Record the insertion depth of the endoscope, then pull out the endoscope and insert a suction tube at the same depth for "blind aspiration", and finally pull out the suction tube and reinsert the endoscope for observation until all the blood clots are aspirated. Both of the above methods have different drawbacks: In method (1), the small size of the operating instruments makes the entire cutting process take a long time, which greatly increases the duration of the operation and also prolongs the patient's pain; In method (2), since the suction tube cannot be observed through the endoscope after insertion, it may be necessary to repeatedly insert and remove the endoscope and suction tube, which greatly increases the pain caused to the patient during insertion and removal. Utility Model Content

[0003] To address the shortcomings of existing technologies, this application provides an in vivo blood clot cutting net structure that can be inserted into the human body through the forceps channel of an endoscope and can be unfolded into an adjustable angle retrieval net structure inside the human body. This structure can effectively and quickly retrieve and cut large blood clots without the need for repeated insertion and withdrawal of the endoscope, thus improving the cutting efficiency of large blood clots and avoiding the pain caused to patients by repeated insertion and withdrawal of the endoscope.

[0004] An in vivo blood clot cutting mesh structure includes an outer tube structure that cooperates with an endoscope, a middle tube structure disposed within and cooperating with the outer tube structure, and an inner core structure disposed within the middle tube structure; wherein the middle tube structure can be inserted or pulled out along the outer tube structure, and the inner core structure can be inserted or pulled out along the middle tube structure.

[0005] Furthermore, the outer tube structure includes an outer extension tube whose size matches the endoscope forceps channel, an outer tube clamping plug fitted on the outer extension tube, an outer support adjustment structure disposed at the tail end of the outer extension tube, and an adjustment wheel disposed on the outer support adjustment structure.

[0006] Preferably, the external insertion tube is a plastic tube or a rubber tube, and the length of the external insertion tube is greater than the length of the endoscopic forceps channel.

[0007] Preferably, the outer tube clamping plug consists of a conical plug head, a bottom ring disposed at the tail of the conical plug head, and a through hole coaxial with the conical plug head and the bottom ring and passing through both the conical plug head and the bottom ring; the diameter of the through hole is greater than or equal to the outer diameter of the external insertion tube; the head of the conical plug head faces the head of the external insertion tube, the outer diameter of the head of the conical plug head is smaller than the inner diameter at the inlet of the endoscope forceps channel, and the outer diameter of the tail of the conical plug head is larger than the inner diameter at the inlet of the endoscope forceps channel.

[0008] Preferably, the external support adjustment structure consists of an outer tube fixing ring fixed to the tail of the outer wall of the outer extension tube, two connecting pieces symmetrically arranged on both sides of the outer tube fixing ring, two No. 1 finger rings symmetrically arranged on the outer sides of the two connecting pieces, two extension strips symmetrically arranged on the rear side of the two connecting pieces, and caliper grooves symmetrically arranged on the opposite surfaces of the two extension strips; each caliper groove also has a set of limiting deformation slopes symmetrically arranged on the left and right side walls to divide its bottom into trapezoidal grooves.

[0009] Preferably, the adjusting wheel consists of a round wheel, a threaded central hole passing through the central shaft of the round wheel, and a trapezoidal ring arranged around the outer edge of the round wheel.

[0010] Preferably, the cross-section of the trapezoidal ring matches the trapezoidal groove formed by the limiting deformation slope in the chuck groove; the two symmetrical ends of the trapezoidal ring are respectively inserted into the trapezoidal grooves of the two chuck grooves and the adjusting wheel can rotate along the axis.

[0011] Furthermore, the central tube structure consists of a central tube with an outer diameter smaller than that of the externally inserted endoscope, an external thread located on the outer wall of the central tube near the tail end, two symmetrically arranged grooves on both sides of the head of the inner wall of the central tube, and an elastic plate extending along the outer wall of the central tube to the tail end of the outer wall of the central tube; the external thread mates with the threaded hole; and the elastic plate is spaced at the same distance from the two grooves.

[0012] Furthermore, the inner core structure consists of an elastic inner core rod with an outer diameter less than 1 / 2 the inner diameter of the middle insertion tube, a second finger ring set at the tail of the inner core rod, and a cut mesh in the shape of a pocket net with the mesh opening fixed to the inner core rod along the head end of the inner core rod.

[0013] Preferably, the tail section of the inner core rod is bent and positioned at the tail end of the middle extension tube, and the tail end of the inner core rod is fixed in any one of the grooves.

[0014] Compared with the prior art, the embodiments of this application have the following beneficial effects:

[0015] This invention allows the endoscope to be inserted into the human body through its forceps channel and unfold into an adjustable-angle retrieval net structure within the body. It can effectively and quickly retrieve and cut large blood clots without the need for repeated insertion and withdrawal of the endoscope, thus improving the efficiency of cutting large blood clots and avoiding the pain caused to patients by repeated insertion and withdrawal of the endoscope.

[0016] Some of the additional features of this application will be described in the following description. These additional features will become apparent to those skilled in the art upon examination of the following description and the accompanying drawings, or upon understanding the production or operation of the embodiments. The features disclosed in this application can be implemented and achieved through the practice or use of various methods, means, and combinations thereof with respect to the specific embodiments described below. Attached Figure Description

[0017] The accompanying drawings, which are provided to further illustrate this application and constitute a part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute a limitation thereof. In the drawings, the same reference numerals denote the same components.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure.

[0020] Figure 3 This is a cross-sectional schematic diagram of the external support adjustment structure of this utility model.

[0021] Figure 4 This is a cross-sectional structural diagram of the adjusting wheel of this utility model.

[0022] Figure 5 This is a schematic diagram of the structure of the present invention when the inner core rod is extended.

[0023] Figure 6 for Figure 5 A schematic diagram of the cross-sectional structure.

[0024] Figure 7 This is a schematic diagram of the structure of the present invention when the inner core rod extends and the adjusting wheel rotates.

[0025] Figure 8 for Figure 7 A magnified view of the side section.

[0026] Explanation of reference numerals in the attached figures:

[0027] 100. External tube structure;

[0028] 110. External insertion tube;

[0029] 120. Outer tube clamping plug; 121. Conical plug; 122. Bottom ring; 123. Through-hole;

[0030] 130. External support adjustment structure; 131. External tube fixing ring; 132. Connecting piece; 133. No. 1 finger insertion ring; 134. Extension strip; 135. Snap ring groove; 136. Limiting deformation slope;

[0031] 140. Adjusting wheel; 141. Gear; 142. Threaded hole; 143. Trapezoidal ring;

[0032] 200. Central tube structure; 201. Central insertion tube; 202. External thread; 203. Groove; 204. Elastic sheet;

[0033] 300. Inner core structure; 301. Inner core rod; 302. No. 2 finger ring; 303. Cutting mesh. Detailed Implementation

[0034] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0035] It should be noted that if the terms "first," "second," etc., are used in the specification, claims, and accompanying drawings of this application, they are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0036] In this application, when terms such as "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" are used, they indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly for better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0037] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0038] Furthermore, in this application, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0039] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0040] Example 1

[0041] like Figure 1-8 As shown, an in vivo blood clot cutting mesh structure includes an outer tube structure 100 that cooperates with an endoscope, a middle tube structure 200 disposed in and cooperating with the outer tube structure 100, and an inner core structure 300 disposed in the middle tube structure 200; wherein, the middle tube structure 200 can be inserted or pulled out along the outer tube structure 100, and the inner core structure 300 can be inserted or pulled out along the middle tube structure 200.

[0042] The outer tube structure 100 includes an outer extension tube 110 whose size matches the endoscope forceps channel, an outer tube clamping plug 120 fitted on the outer extension tube 110, an outer support adjustment structure 130 disposed at the tail end of the outer extension tube 110, and an adjustment wheel 140 disposed on the outer support adjustment structure 130.

[0043] The external insertion tube 110 is a plastic tube or a rubber tube, and the length of the external insertion tube 110 is greater than the length of the endoscopic forceps channel.

[0044] The external insertion tube needs to have certain wear resistance, corrosion resistance, and hardness, as well as a certain degree of deformation capability. Its material can be the same as that used for the endoscope's outer sheath. The choice of material can be adjusted according to actual needs, as long as it meets the requirements. Those skilled in the art can use it without creative effort, so it will not be elaborated upon here.

[0045] The outer tube clamping plug 120 consists of a conical plug 121, a bottom ring 122 disposed at the tail of the conical plug 121, and a tube hole 123 coaxial with the conical plug 121 and the bottom ring 122 and passing through the conical plug 121 and the bottom ring 122; the diameter of the tube hole 123 is greater than or equal to the outer diameter of the outer tube 110; the head of the conical plug 121 faces the head of the outer tube 110, the outer diameter of the head of the conical plug 121 is smaller than the inner diameter at the entrance of the endoscope forceps channel, and the outer diameter of the tail of the conical plug 121 is larger than the inner diameter at the entrance of the endoscope forceps channel.

[0046] The function of the outer tube clamping plug is to clamp the outer tube at the entrance of the inner diameter clamping channel after the outer tube is inserted to the required depth, so as to prevent the outer tube from shifting during subsequent operations and improve the stability of product use.

[0047] The external support adjustment structure 130 consists of an outer tube fixing ring 131 fixed to the tail of the outer wall of the outer extension tube 110, two connecting pieces 132 symmetrically arranged on both sides of the outer tube fixing ring 131, two first finger rings 133 symmetrically arranged on the outer side of the two connecting pieces 132, two extension strips 134 symmetrically arranged on the rear side of the two connecting pieces 132, and caliper grooves 135 symmetrically arranged on the opposite surfaces of the two extension strips 134; each caliper groove 135 is also symmetrically provided with a set of limiting deformation slopes 136 that divide its bottom into trapezoidal grooves on the left and right side walls.

[0048] The external support adjustment structure is equipped with a finger insertion ring, which allows the operator to insert the index and middle fingers respectively. After the external insertion tube is inserted to the predetermined depth, the insertion depth can be adjusted more easily by using the index and middle fingers, reducing the difficulty of fine adjustment and improving the accuracy of adjustment.

[0049] The external support adjustment structure can be made of one piece of plastic material, which greatly reduces the production cost of the product.

[0050] The adjusting wheel 140 consists of a round wheel 141, a threaded central hole 142 passing through the central axis of the round wheel 141, and a trapezoidal ring 143 arranged around the outer edge of the round wheel 141.

[0051] The cross-section of the trapezoidal ring 143 matches the trapezoidal groove formed by the limiting deformation slope 136 in the chuck groove 135; the two symmetrical ends of the trapezoidal ring 143 are respectively inserted into the trapezoidal grooves of the two chuck grooves 135 and the adjusting wheel 140 can rotate along the axis.

[0052] During the insertion of the trapezoidal ring into the locating groove, it pushes the limiting deformation slope to both sides, so that the two side walls of the locating groove are subjected to outward squeezing force. This causes the two side walls of the locating groove to deform in opposite directions, allowing the trapezoidal ring to pass through. After the trapezoidal ring enters the trapezoidal groove, the two side walls of the locating groove spring back to their original shape under the elastic action of the plastic. Thus, the trapezoidal ring is both confined in the trapezoidal groove and can rotate along the central axis without falling out. Its structure is simple and easy to produce and install.

[0053] The central tube structure 200 consists of a central insertion tube 201 with an outer diameter smaller than that of the endoscope in the external insertion tube 110, an external thread 202 located on the outer wall of the central insertion tube 201 near the tail, two grooves 203 symmetrically arranged on both sides of the head of the inner wall of the central insertion tube 201, and an elastic sheet 204 extending along the outer wall of the central insertion tube 201 to the tail end of the outer wall of the central insertion tube 201; the external thread 202 mates with the threaded central hole 142; the elastic sheet 204 is spaced at the same distance from the two grooves 203.

[0054] The elastic sheet should be selected based on the fact that it bends under its natural state.

[0055] The rotating adjusting wheel adjusts the length of the head of the middle tube extending beyond the outer tube structure by engaging the threads of the threaded hole and the external thread. Because the outer tube structure has elastic plates, these plates exert a bending force during the extension of the middle tube, forcing the head of the middle tube structure to bend, thus adjusting the curvature of the head. Since the elastic plates are spaced equidistant from the two grooves, the bending direction of the middle tube extension remains perpendicular to the plane of the two grooves.

[0056] The inner core structure 300 consists of an inner core rod 301 that is elastic and has an outer diameter that is less than 1 / 2 of the inner diameter of the middle insertion tube 201, a second finger ring 302 disposed at the tail of the inner core rod 301, and a cut mesh 303 that is shaped like a pocket and has its mesh opening fixed to the inner core rod 301 along the head end of the inner core rod 301.

[0057] The tail section of the inner core rod 301 is bent and positioned at the tail end of the middle extension tube 201, and the tail end of the inner core rod 301 is fixed in any one of the grooves 203.

[0058] The inner core rod can be made of highly elastic plastic or metal. Due to its curved end, the two ends of the curved section are subjected to two opposing elastic forces. Since its end is fixed in a groove, the other end of the curved section will be pressed into another groove under the action of the elastic force. Because the head of the inner core rod is fixed in the groove, the head will not be pushed out when the inner core rod is pushed; only the rear section of the head will be pushed out. Under the action of the elastic force, the pushed-out inner core rod will form an approximately ring-shaped structure on the same plane as the two grooves. The cutting net is also brought out along with the pushed-out inner core rod, ultimately forming a net-catching structure together with the pushed-out inner core rod.

[0059] The actual usage process and method of the product are as follows:

[0060] (1) After the endoscope is inserted into the corresponding position in the human body, the external insertion tube is inserted through the forceps channel;

[0061] (2) After the head of the external insertion tube extends out of the clamp channel, the length of its extension is adjusted by the external support adjustment structure;

[0062] (3) After adjusting the outer tube, push the outer tube clamping plug to fix the relative position between the outer tube and the clamp channel;

[0063] (4) Push the inner core rod through the No. 2 finger ring, so that the rear part of the head of the inner core rod is pushed out of the middle extension tube and brings out the cutting net to form a scooping net structure;

[0064] (5) Rotate the adjusting wheel so that the head of the middle insertion tube extends out from the position of the head of the outer insertion tube. The head of the middle insertion tube bends in the direction perpendicular to the net under the action of the elastic sheet. After bending to the required angle, the blood clot can be retrieved.

[0065] Blood clots can be retrieved either by pulling back the endoscope or by pulling out the external tube clamp plug to release the fixation between the external tube and the forceps channel, and finally by controlling the displacement of the external tube to retrieve the blood clot.

[0066] (6) After the blood clot is retrieved and enters the cutting net, pull the No. 2 finger ring back so that the inner core rod is gradually pulled back into the tube, thus completing the "closing" of the cutting net;

[0067] (7) The blood clot is cut using a cutting mesh, and there are three specific operating methods:

[0068] The first method involves pulling the extended tube outward through the No. 1 finger ring, which gradually allows the entire product to enter the clamp channel. During the process of entering the clamp channel, the cutting mesh will squeeze the blood clot, and the squeezed-out blood clot will be shredded by the cutting mesh.

[0069] The second method involves continuously pulling the inner core rod outward through the No. 2 finger ring, eventually causing the head of the inner core rod to detach from the fixed position and be pulled backward along with the entire inner core rod. As the inner core rod is pulled outward, the cutting mesh will also be pulled into the middle insertion tube. As the cutting mesh is pulled into the middle insertion tube, the blood clot is squeezed by the arc, and the squeezed-out blood clot will be cut into pieces by the cutting mesh.

[0070] The third method is similar to the second method, except that the head of the inner core rod will not detach from the fixed position. Instead, the head of the inner core rod will deform or tear the head of the inserted tube during the pulling process, and the blood clot will be squeezed and shredded during the process of the cutting mesh being pulled into the outer inserted tube.

[0071] (8) After cutting, pull the product out of the clamp channel as a whole.

[0072] It should be noted that all features disclosed in this specification, or all steps in all methods or processes disclosed, may be combined in any way, except for mutually exclusive features and / or steps.

[0073] Furthermore, the specific embodiments described above are exemplary. Those skilled in the art can devise various solutions inspired by the disclosure of this utility model, and these solutions all fall within the scope of this utility model and its protection. Those skilled in the art should understand that this utility model specification and its drawings are illustrative and not intended to limit the scope of the claims. The scope of protection of this utility model is defined by the claims and their equivalents.

Claims

1. A blood clot cutting mesh structure in vivo, characterized in that, It includes an outer tube structure (100) that cooperates with an endoscope, a middle tube structure (200) disposed in the outer tube structure (100) and cooperating with the outer tube structure (100), and an inner core structure (300) disposed in the middle tube structure (200); wherein the middle tube structure (200) can be inserted or pulled out along the outer tube structure (100), and the inner core structure (300) can be inserted or pulled out along the middle tube structure (200).

2. The in vivo blood clot cutting mesh structure according to claim 1, characterized in that, The outer tube structure (100) includes an outer extension tube (110) whose size matches the endoscope forceps channel, an outer tube clamping plug (120) fitted on the outer extension tube (110), an outer support adjustment structure (130) disposed at the tail end of the outer extension tube (110), and an adjustment wheel (140) disposed on the outer support adjustment structure (130).

3. The in vivo blood clot cutting mesh structure according to claim 2, characterized in that, The external insertion tube (110) is a plastic tube or a rubber tube, and the length of the external insertion tube (110) is greater than the length of the endoscopic forceps channel.

4. The in vivo blood clot cutting mesh structure according to claim 3, characterized in that, The outer tube clamping plug (120) consists of a conical plug (121), a bottom ring (122) located at the tail of the conical plug (121), and a through hole (123) coaxial with the conical plug (121) and the bottom ring (122) and passing through the conical plug (121) and the bottom ring (122); the diameter of the through hole (123) is greater than or equal to the outer diameter of the outer tube (110); the head of the conical plug (121) faces the head of the outer tube (110), the outer diameter of the head of the conical plug (121) is smaller than the inner diameter at the entrance of the endoscope forceps channel, and the outer diameter of the tail of the conical plug (121) is larger than the inner diameter at the entrance of the endoscope forceps channel.

5. The in vivo blood clot cutting mesh structure according to claim 4, characterized in that, The external support adjustment structure (130) consists of an outer tube fixing ring (131) fixed to the tail of the outer wall of the outer extension tube (110), two connecting pieces (132) symmetrically arranged on both sides of the outer tube fixing ring (131), two No. 1 finger rings (133) symmetrically arranged on the outer side of the two connecting pieces (132), two extension strips (134) symmetrically arranged on the rear side of the two connecting pieces (132), and caliper grooves (135) symmetrically arranged on the opposite surfaces of the two extension strips (134); each caliper groove (135) is also symmetrically arranged on the left and right side walls with a set of limiting deformation slopes (136) that divide its bottom into trapezoidal grooves.

6. The in vivo blood clot cutting mesh structure according to claim 5, characterized in that, The adjusting wheel (140) consists of a round wheel (141), a threaded central hole (142) passing through the central axis of the round wheel (141), and a trapezoidal ring (143) arranged around the outer edge of the round wheel (141).

7. The in vivo blood clot cutting mesh structure according to claim 6, characterized in that, The cross section of the trapezoidal ring (143) matches the trapezoidal groove formed by the limiting deformation slope (136) in the chuck groove (135); the two symmetrical ends of the trapezoidal ring (143) are respectively inserted into the trapezoidal grooves of the two chuck grooves (135) and the adjusting wheel (140) can rotate along the axis.

8. The in vivo blood clot cutting mesh structure according to claim 7, characterized in that, The central tube structure (200) consists of a central tube (201) with an outer diameter smaller than that of the endoscope in the external insertion tube (110), an external thread (202) located on the outer side wall of the central tube (201) near the tail, two grooves (203) symmetrically arranged on both sides of the head of the inner side wall of the central tube (201), and an elastic plate (204) arranged along the outer side wall of the central tube (201) and extending to the tail end of the outer side wall of the central tube (201); the external thread (202) cooperates with the threaded central hole (142); the elastic plate (204) is spaced at the same distance from the two grooves (203).

9. The in vivo blood clot cutting mesh structure according to claim 8, characterized in that, The inner core structure (300) consists of an inner core rod (301) that is elastic and has an outer diameter that is less than 1 / 2 the inner diameter of the middle insertion tube (201), a second finger ring (302) set at the tail of the inner core rod (301), and a cutting mesh (303) that is shaped like a pocket and has its mesh opening fixed to the inner core rod (301) along the head end of the inner core rod (301).

10. The in vivo blood clot cutting mesh structure according to claim 9, characterized in that, The tail section of the inner core rod (301) is bent and set at the tail end of the middle extension tube (201), and the tail end of the inner core rod (301) is fixed in any one of the grooves (203).

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