Unlocking and releasing system for gastric bypass stent and gastric bypass stent system

Abstract

The application discloses an unlocking and releasing system of a gastric bypass stent and a gastric bypass stent system, and relates to the technical field of medical devices. The structure directly adopts a connecting hose to push and release a ball, the center of the connecting hose and the ball is on a straight line, the pushing process is safer, and the risk of injury to the human body is reduced. In addition, since the center of the connecting hose and the ball is on a straight line, and no other structure or material is installed in the connecting hose, a guide wire can directly pass through the inner cavity of the connecting hose, so that the center guiding function of the release ball is realized, the release ball can more conveniently and quickly enter the pyloric orifice, and the operation convenience of the gastric bypass stent in the implanting process is improved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically, to a gastric bypass stent unlocking and release system and a gastric bypass stent system. Background Technology

[0002] According to the "Guidelines for the Diagnosis and Treatment of Obesity (2024 Edition)" issued by the National Health Commission, the prevalence of obesity among adults in my country has reached 16.4%. With the improvement of my country's economy and the enrichment of people's diets, obesity has gradually developed into a public health problem threatening people's health. Current treatment methods mainly include diet, exercise, and behavioral interventions; drug therapy; endoscopic bariatric and metabolic therapy (EBMT); and surgical treatment. EBMT, as a non-surgical weight loss method, has shown excellent efficacy in the field of weight loss and has been recognized by the American Society for Gastrointestinal Endoscopy (ASGE) and the European Society for Gastrointestinal Endoscopy (ESGE).

[0003] One such technique is the gastric bypass stent system (duodenojejunal cannula), which involves inserting a membranous cannula into the duodenum and upper jejunum via endoscopy. This isolates chyme from the intestinal mucosa, interfering with hormone signals related to insulin resistance and affecting food digestion and absorption, thereby treating obesity and obesity-related complications. The principle of this technique is similar to surgical gastric bypass surgery, but it is performed endoscopically, eliminating the need for incisions. It offers advantages such as being minimally invasive, easy to operate, not damaging human structures, easily removable, and re-insertable, making it a promising area for application.

[0004] There are also related technologies for duodenal and jejunal cannula insertion abroad, but they usually require multiple release lines to assist in the operation, which greatly increases the difficulty of the operation. If the operation is wrong, it will increase the patient's discomfort and the risk of injury to the human body.

[0005] In view of this, the present invention is proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a gastric bypass stent unlocking and release system and a gastric bypass stent system.

[0007] This invention is implemented as follows:

[0008] In a first aspect, the present invention provides an unlocking and release system for a gastric bypass stent, comprising a stent release unit, a connecting hose, and an operating unit, wherein the two ends of the connecting hose are respectively connected to the stent release unit and the operating unit.

[0009] The stent release unit includes a release ball, a receiving tube, and an elastic positioning element. The receiving tube is configured to selectively accommodate the membrane tube stent. The release ball is clearance-fitted with one end of the receiving tube. The release ball has a positioning cavity for accommodating the elastic positioning element. The connecting hose passes through the receiving tube and is accommodated within the release ball. The elastic positioning element is fitted onto the surface of the connecting hose near the end of the release ball. The elastic positioning element has a mesh structure with a selectively changeable diameter, allowing it to be selectively positioned within the positioning cavity. The operating unit is configured to control the change in the diameter of the elastic positioning element.

[0010] In an optional embodiment, the positioning cavity includes an opening and an inner cavity, and the connection between the opening and the inner cavity is a positioning part; the end of the release ball near the receiving tube has an opening, which communicates with the inner cavity, and the elastic positioning member is accommodated in the inner cavity of the release ball; when the diameter of the elastic positioning member increases, the elastic positioning member contacts and positions itself with the positioning part.

[0011] Preferably, the connecting hose includes an inner connecting tube and an outer connecting tube, the outer connecting tube is sleeved on the surface of the inner connecting tube, one end of the elastic positioning member is fixed to the outer connecting tube, and the other end is fixed to the inner connecting tube. The operating unit is configured to control the inner connecting tube and the outer connecting tube to selectively move relative to each other, so that the elastic positioning member can selectively block the opening end of the inner cavity.

[0012] Preferably, the elastic positioning element is a three-dimensional woven mesh structure.

[0013] Preferably, the elastic positioning element is a three-dimensional mesh structure that can be selectively compressed into a disc shape.

[0014] Preferably, the elastic positioning element is made of nickel-titanium alloy.

[0015] In an optional implementation, the operating unit includes a first control component configured to control the diameter change of the elastic positioning element.

[0016] The first control component includes a connecting outer tube handle and a connecting inner tube handle that can be selectively spaced apart. The connecting outer tube handle is fixed to the end of the connecting outer tube away from the release ball, and the connecting inner tube handle is fixed to the end of the connecting inner tube away from the release ball. The connecting hose is in the end away from the release ball, and the connecting inner tube can selectively extend out of the connecting outer tube.

[0017] In an optional embodiment, the first control component further includes a locking element that can be selectively fitted onto the surface of the connecting inner tube between the connecting outer tube handle and the connecting inner tube handle.

[0018] Preferably, when the elastic positioning member contacts and positions the positioning part, the locking member is sleeved on the surface of the connecting inner tube.

[0019] Preferably, the locking element is a C-shaped open ring.

[0020] In an optional embodiment, the operating unit further includes a handle, a fixing knob, and a grip, which are sequentially fitted onto the surface of the connecting hose along the direction from the first control component to the bracket release unit. The fixing knob is connected to the grip, and the grip and the fixing knob can be selectively spaced apart.

[0021] In an optional embodiment, silicone positioning elements are provided on both sides of the channel inside the fixed knob, and the silicone positioning elements and the connecting outer tube can be selectively squeezed and positioned.

[0022] In an optional embodiment, the end of the elastic positioning member away from the operating unit is fixed to the inner connecting tube, and the end of the elastic positioning member close to the operating unit is fixed to the outer connecting tube.

[0023] In an optional embodiment, the support release unit further includes a connector that is connected to the end of the storage tube away from the release ball.

[0024] In an optional implementation, a receiving groove is provided at the end of the release ball away from the receiving tube, and the connecting hose can be selectively accommodated in the receiving groove.

[0025] In a second aspect, the present invention provides a gastric bypass stent system, including a membrane tube stent and a system as described in any of the foregoing embodiments, wherein the membrane tube stent can be selectively accommodated within a receiving tube.

[0026] The present invention has the following beneficial effects:

[0027] This invention provides an unlocking and release system for a gastric bypass stent and a gastric bypass stent system. By improving the structure of the connecting tubing, an elastic positioning element is fitted onto the outer surface of the connecting tubing. The operating unit controls the diameter of the elastic positioning element to increase or decrease. When the diameter of the elastic positioning element is at its maximum, it contacts and positions itself against the positioning part of the release ball, restricting the position of the release ball and the receiving tube, and preventing premature dislodgement of the membrane stent. When the diameter of the elastic positioning element is at its minimum, the mesh structure of the elastic positioning element can extend to form a columnar structure, releasing the positioning effect of the elastic positioning element, releasing the release ball, and causing the membrane stent to unfold, thus realizing the placement of the membrane stent. This structure directly uses a connecting tubing to push the release ball, with the center of the connecting tubing and the release ball aligned in a straight line. This makes the pushing process safer and reduces the risk of injury to the human body. In addition, because the center of the connecting tubing and the release ball are aligned in a straight line, and no other structures or materials are installed inside the connecting tubing, the guide wire can pass directly through the inner lumen of the connecting tubing, thereby achieving the center guidance function of the release ball. The release ball can enter the pylorus more conveniently and quickly, improving the operational convenience of the gastric bypass stent during the placement process. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of a gastric bypass stent unlocking and release system provided in an embodiment of the present invention;

[0030] Figure 2 This is a structural cross-sectional view of a gastric bypass stent unlocking and release system provided in an embodiment of the present invention;

[0031] Figure 3 for Figure 2 Enlarged view of the A-structure in the middle;

[0032] Figure 4 An enlarged view of structure A during the release of the small ball;

[0033] Figure 5 A schematic diagram of the compressed state of the elastic positioning member provided in an embodiment of the present invention;

[0034] Figure 6 A schematic diagram of the elastic positioning member in a stretched state according to an embodiment of the present invention;

[0035] Figure 7 This is a schematic diagram of the structure of the first control component in the compressed state of the elastic positioning element according to an embodiment of the present invention;

[0036] Figure 8 This is a schematic diagram of the structure of the first control component in the stretched state of the elastic positioning member according to an embodiment of the present invention;

[0037] Figure 9 This is a structural cross-sectional view of the handle and fixing knob provided in an embodiment of the present invention.

[0038] Key component symbols: 100 - Unlocking and releasing system; 110 - Release ball; 111 - Opening; 112 - Inner cavity; 113 - Positioning part; 114 - Receiving groove; 120 - Storage tube; 130 - Elastic positioning element; 140 - Connector; 150 - First control component; 151 - Connecting handle to outer tube; 152 - Connecting handle to inner tube; 153 - Locking element; 160 - Handle; 170 - Fixing knob; 171 - Silicone positioning element; 180 - Handle; 190 - Connecting hose; 191 - Connecting inner tube; 192 - Connecting outer tube. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0041] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0042] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0043] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0044] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] Please refer to Figure 1 and Figure 2This embodiment provides a gastric bypass stent unlocking and release system 100, including a stent release unit, a connecting hose 190 and an operating unit, with the two ends of the connecting hose 190 connected to the stent release unit and the operating unit respectively.

[0046] The release system 100 is a key structure that assists in the insertion of the gastric bypass stent into its corresponding position within the body and releases the membrane stent. The stent release unit serves to accommodate the membrane stent during insertion, preventing premature dislodgement. Once the stent is in place, the release unit releases it into the body. The operating unit is connected to the stent release unit via a connecting hose 190 and controls the stent release unit's operation on the membrane stent by controlling the connecting hose 190.

[0047] Please refer to Figure 3 The support release unit includes a release ball 110, a storage tube 120, and an elastic positioning element 130.

[0048] The receiving tube 120 is configured to selectively accommodate the membrane stent. When the membrane stent is in the delivery state, the membrane stent is contained within the receiving tube 120; after the membrane stent is delivered to the correct position, the membrane stent can be detached from the receiving tube 120 and inserted into the body with the assistance of structures such as the release ball 110.

[0049] Please refer to Figure 4 The release ball 110 is fitted with a gap at one end of the receiving tube 120 so that the release ball 110 can be separated from the receiving tube 120, making it easier for the membrane tube support to come out of the receiving tube 120. The release ball 110 can also drive the membrane tube support to come out of the receiving tube 120 and unfold.

[0050] Please refer to Figure 3 and Figure 4 The release ball 110 has a positioning cavity for accommodating the elastic positioning member 130. The positioning cavity includes an opening 111 and an inner cavity 112, and the connection between the opening 111 and the inner cavity 112 is a positioning part 113. The end of the release ball 110 near the receiving tube 120 has an opening 111, and the release ball 110 has an inner cavity 112. The opening 111 communicates with the inner cavity 112, and the positioning part 113 is provided at the connection between the opening 111 and the inner cavity 112. The connecting hose 190 passes through the receiving tube 120 and is accommodated in the release ball 110. The elastic positioning member 130 is sleeved on the surface of the connecting hose 190 and is accommodated in the inner cavity 112 of the release ball 110. The elastic positioning member 130 has a mesh structure with a selectively changeable diameter so that the elastic positioning member 130 and the positioning part 113 can be selectively positioned.

[0051] The connecting hose 190 passes through the receiving tube 120 and engages with the positioning part 113 inside the release ball 110 via the elastic positioning member 130, thus achieving a controllable connection between the receiving tube 120 and the release ball 110. Since the connecting hose 190 passes through the receiving tube 120 and is housed within the release ball 110, during the insertion of the membrane tube support, to prevent premature dislodgement, the diameter of the elastic positioning member 130 changes to its maximum, thereby contacting and positioning with the positioning part 113. The release ball 110 is fixedly connected to the receiving tube 120 via the connecting hose 190, confining the membrane tube support within the receiving tube 120. When the membrane tube support is delivered to its position, the diameter of the elastic positioning member 130 decreases, releasing its positioning ability with the positioning part 113, and the release ball 110 disengages from one end of the receiving tube 120, facilitating the unfolding and release of the membrane tube support.

[0052] To control the diameter change of the elastic positioning member 130, the connecting hose 190 includes an inner connecting tube 191 and an outer connecting tube 192. The outer connecting tube 192 is sleeved on the surface of the inner connecting tube 191. One end of the elastic positioning member 130 is fixed to the outer connecting tube 192, and the other end is fixed to the inner connecting tube 191. The operating unit is configured to control the inner connecting tube 191 and the outer connecting tube 192 to selectively move relative to each other, so that the elastic positioning member 130 can selectively block the opening 111 end of the inner cavity 112.

[0053] Since the inner connecting tube 191 and the outer connecting tube 192 can move relative to each other axially, the shape of the elastic positioning member 130 can be controlled. Specifically, the connecting hose 190 is configured such that the outer connecting tube 192 is sleeved on the surface of the inner connecting tube 191. One end of the elastic positioning member 130 is fixed to the outer connecting tube 192, and the other end is fixed to the inner connecting tube 191. The operating unit controls the axial displacement of the inner connecting tube 191 and the outer connecting tube 192, thereby controlling the diameter of the elastic positioning member 130 to increase or decrease.

[0054] The relative position between the inner tube 191 and the outer tube 192 is controlled by the operating unit. When the inner tube 191 and the outer tube 192 move and stretch the elastic positioning member 130, the elastic positioning member 130 can be stretched into a strip shape, thereby losing its positioning ability with the positioning part 113, releasing the small ball 110 to detach from the storage tube 120, which facilitates the unfolding and release of the membrane tube support.

[0055] When the inner connecting tube 191 and the outer connecting tube 192 move and compress the elastic positioning member 130, the elastic positioning member 130 can be compressed into a shape with a larger diameter, such as a sphere or a disc, thereby achieving contact positioning with the positioning part 113. The connecting hose 190 and the elastic positioning member 130 will connect the release ball 110 to the receiving tube 120 to prevent the membrane tube support from falling out of the receiving tube 120.

[0056] Please refer to Figure 5 and Figure 6 In this embodiment, the elastic positioning member 130 is a three-dimensional woven mesh structure. When the elastic positioning member 130 is in a compressed state, it is a three-dimensional mesh structure compressed into a disc shape; when the elastic positioning member 130 is in a stretched state, it is a strip-shaped three-dimensional mesh structure.

[0057] In this embodiment, in order to ensure the positioning function (strength) and elasticity of the elastic positioning member 130, the elastic positioning member 130 is made of nickel-titanium alloy.

[0058] In this embodiment, the end of the elastic positioning member 130 away from the operating unit is fixed to the inner tube 191, and the end of the elastic positioning member 130 close to the operating unit is fixed to the outer tube 192, so that when the inner tube 191 and the outer tube 192 move, the diameter of the elastic positioning member 130 can change synchronously.

[0059] Please refer to Figure 4 In this embodiment, a receiving groove 114 is provided at the end of the release ball 110 away from the receiving tube 120. The connecting hose 190 (connecting inner tube 191 in this embodiment) can be selectively accommodated in the receiving groove 114, which facilitates the positioning of the release ball 110 and the receiving tube 120.

[0060] Please refer to Figure 1 In this embodiment, to ensure that the membrane tube stent does not detach prematurely, the stent release unit further includes a connector 140, which is connected to the end of the receiving tube 120 away from the release ball 110. In other embodiments, the shape of the receiving tube 120 can also be changed, for example, by setting the end of the receiving tube 120 away from the release ball 110 to a closed structure that can only be connected to the flexible tube 190.

[0061] Please refer to Figure 7 In order to control the movement process between the inner tube 191 and the outer tube 192, the operating unit includes a first control component 150, which is configured to control the diameter change of the elastic positioning member 130.

[0062] The first control component 150 includes a connecting outer tube handle 151 and a connecting inner tube handle 152 that can be selectively spaced apart. The connecting outer tube handle 151 is fixed to the end of the connecting outer tube 192 away from the release ball 110, and the connecting inner tube handle 152 is fixed to the end of the connecting inner tube 191 away from the release ball 110. The connecting hose 190 is in the end away from the release ball 110, and the connecting inner tube 191 can selectively extend out of the connecting outer tube 192.

[0063] Please refer to Figure 4 , Figure 6 and Figure 8 When the outer tube handle 151 contacts the inner tube handle 152, the elastic positioning member 130 is stretched into a strip shape by the tension caused by the displacement change between the inner tube 191 and the outer tube 192; please refer to Figure 3 , Figure 4 and Figure 7 When the outer tube handle 151 and the inner tube handle 152 are spaced apart, the elastic positioning member 130 is compressed into a disc shape by the force of the displacement change between the inner tube 191 and the outer tube 192.

[0064] Please refer to Figure 7 In this embodiment, in order to facilitate control of the distance between the connecting outer tube handle 151 and the connecting inner tube handle 152, the first control component 150 further includes a locking member 153. The locking member 153 can be selectively fitted onto the surface of the connecting inner tube 191 between the connecting outer tube handle 151 and the connecting inner tube handle 152, so that the process of the elastic positioning member 130 being compressed into a disc shape is more stable and the difficulty for the user to maintain the elastic positioning member 130 in a disc shape is reduced.

[0065] When the outer tube handle 151 contacts the inner tube handle 152, the locking member 153 can also be fitted onto the surface of the outer tube handle 151, reducing the difficulty for the user to maintain the elastic positioning member 130 in a strip shape.

[0066] In this embodiment, when the elastic positioning member 130 contacts and positions itself with the positioning part 113, the locking member 153 is fitted onto the surface of the connecting inner tube 191.

[0067] In this embodiment, in order to facilitate the removal and installation of the locking member 153, the locking member 153 is a C-shaped opening 111 ring.

[0068] Please refer to Figure 1 and Figure 2 In this embodiment, the operating unit also includes a handle 160, a fixing knob 170 and a handle 180 that are sequentially fitted onto the surface of the connecting hose 190 along the direction from the first control component 150 to the support release unit. The fixing knob 170 is connected to the handle 180, and the handle 160 and the fixing knob 170 can be selectively spaced apart for releasing the membrane tube support.

[0069] Please refer to Figure 9In this embodiment, silicone positioning elements 171 are provided on both sides of the channel inside the fixed knob 170. The silicone positioning elements 171 and the connecting outer tube 192 can be selectively squeezed and positioned. In this embodiment, the silicone positioning elements 171 can squeeze or loosen the connecting outer tube 192 by turning them. When the silicone positioning elements 171 squeeze the connecting outer tube 192, the position of the connecting outer tube 192 is fixed. The diameter of the elastic positioning element 130 is changed by controlling whether the locking element 153 is sleeved on the surface of the connecting inner tube 191. When the silicone positioning elements 171 loosen the connecting outer tube 192, the connecting outer tube 192 can move relative to the fixed knob 170. Therefore, when the locking element 153 locks the relative position of the connecting inner tube 191 and the connecting outer tube 192, the connecting hose 190 can move relative to the fixed knob 170 to push the release ball 110 away from the receiving tube 120, so that the release ball 110 can drive the membrane tube support to unfold.

[0070] The working principle of the gastric bypass stent unlocking and release system 100 provided in this embodiment is as follows:

[0071] Please refer to Figure 2 The membrane tube support is housed in the receiving tube 120. One end of the receiving tube 120 is fitted with the release ball 110 with a clearance, and the other end is fixedly connected to the connector 140 to prevent the membrane tube support from prematurely detaching from the receiving tube 120.

[0072] Please refer to Figure 3 , Figure 5 and Figure 7 The fixing knob 170 of the unlocking and release system 100 is turned to compress the connecting outer tube 192 to prevent the connecting outer tube 192 from moving relative to the fixing knob 170; the locking member 153 is sleeved on the surface of the connecting inner tube 191 and is located between the connecting inner tube handle 152 and the connecting outer tube handle 151 to prevent relative movement between the connecting inner tube 191 and the connecting outer tube 192; since the connecting inner tube handle 152 and the connecting outer tube handle 151 are spaced apart, the elastic positioning member 130 is compressed into a disc shape, and the elastic positioning member 130 contacts and positions the positioning part 113 of the release ball 110, fixing the release ball 110 to one end of the receiving tube 120 to prevent the membrane tube support from coming out.

[0073] With the assistance of a gastroscopy, the guidewire is inserted into the pylorus. The gastroscopy is then withdrawn, and the guidewire is inserted through the connecting inner tube 191 at one end of the release ball 110. The unlocking and release system 100 is then guided into the pylorus by the guidewire. Since the guidewire is centrally guided, the unlocking and release system 100 provided in this embodiment is more convenient and faster when entering the pylorus, without the need for the assistance of tools such as foreign body forceps.

[0074] Please refer to Figure 4 , Figure 6 and Figure 8 After the unlocking and release system 100 is in place, the guide wire is removed, the locking member 153 is taken off, and the inner tube handle 152 is pulled so that the inner tube handle 152 and the outer tube handle 151 come into contact. The inner tube 191 moves relative to the outer tube 192 with the inner tube handle 152 so that the elastic positioning member 130 is stretched into a strip shape. The elastic positioning member 130 contacts the release ball 110 positioning part 113 to release the positioning. The release ball 110 leaves the receiving tube 120. The operating handle 180 and handle 160 release the membrane tube support. Then, the fixing knob 170 is turned so that the outer tube 192 can move relative to the fixing knob 170. The inner tube handle 152 and the outer tube handle 151 are pushed together towards the fixing knob 170 so that the connecting hose 190 can completely push the release ball 110 out of the receiving tube 120 and drive the membrane tube support to unfold.

[0075] Since the unlocking and release system 100 provided in this embodiment can directly push the release ball 110 with the connecting hose 190, the flexibility of the connecting hose 190 and the central pushing effect can avoid the risk of puncturing the membrane tube or even injuring the intestine during the guide wire pushing process.

[0076] Since the unlocking and release system 100 provided in this embodiment can directly position and release the release ball 110 through the connecting hose 190, there is no need to set an unlocking line. Therefore, the unlocking and release system 100 provided in this embodiment has a simpler structure, is easier to operate, and is safer to use. In addition, since the connecting hose 190 does not contain an unlocking line, the space inside the connecting hose 190 can be used to accommodate a guide wire. This allows the process of the guide wire guiding the unlocking and release system 100 into the body to be centered, improving the efficiency of the implantation of the unlocking and release system 100, reducing the difficulty of implantation, and avoiding the risk of the unlocking line breaking or getting stuck due to tangling and knotting when the guide wire and the unlocking line are both set inside the connecting hose 190.

[0077] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A gastric bypass stent unlocking and release system, characterized in that, It includes a support release unit, a connecting hose, and an operating unit, with both ends of the connecting hose connected to the support release unit and the operating unit, respectively. The support release unit includes a release ball, a receiving tube, and an elastic positioning element. The receiving tube is configured to selectively accommodate the membrane tube support. The release ball is clearance-fitted with one end of the receiving tube. The release ball has a positioning cavity for accommodating the elastic positioning element. The connecting hose passes through the receiving tube and is accommodated within the release ball. The elastic positioning element is sleeved on the surface of the connecting hose near the end of the release ball. The elastic positioning element has a mesh structure with a selectively changeable diameter, allowing it to be selectively positioned within the positioning cavity. The operating unit is configured to control the change in the diameter of the elastic positioning element. The positioning cavity includes an opening and an inner cavity, and the connection between the opening and the inner cavity is a positioning part; the end of the release ball near the receiving tube has an opening, the opening is connected to the inner cavity, and the elastic positioning member is accommodated in the inner cavity of the release ball; when the diameter of the elastic positioning member increases, the elastic positioning member contacts and positions itself with the positioning part. The elastic positioning element is made of nickel-titanium alloy; the elastic positioning element is a three-dimensional mesh structure that can be selectively compressed into a disc shape; The operating unit includes a first control component, which is configured to control the diameter change of the elastic positioning member; The first control component includes a connecting outer tube handle and a connecting inner tube handle that can be selectively spaced apart. The connecting outer tube handle is fixed to the end of the connecting outer tube away from the release ball, and the connecting inner tube handle is fixed to the end of the connecting inner tube away from the release ball. The connecting hose is located at the end away from the release ball, and the connecting inner tube can selectively extend out of the connecting outer tube. The first control component further includes a locking element that can be selectively fitted onto the surface of the connecting inner tube between the connecting outer tube handle and the connecting inner tube handle; When the elastic positioning member contacts and positions itself with the positioning part, the locking member is fitted onto the surface of the connecting inner tube.

2. The system according to claim 1, characterized in that, The connecting hose includes an inner connecting tube and an outer connecting tube. The outer connecting tube is sleeved on the surface of the inner connecting tube. One end of the elastic positioning member is fixed to the outer connecting tube, and the other end is fixed to the inner connecting tube. The operating unit is configured to control the inner connecting tube and the outer connecting tube to selectively move relative to each other, so that the elastic positioning member can selectively block the opening end of the inner cavity.

3. The system according to claim 2, characterized in that, The elastic positioning element is a three-dimensional woven mesh structure.

4. The system according to claim 1, characterized in that, The locking element is a C-shaped open ring.

5. The system according to claim 1, characterized in that, The operating unit further includes a handle, a fixing knob, and a grip, which are sequentially fitted onto the surface of the connecting hose along the direction from the first control component to the bracket release unit. The fixing knob is connected to the grip, and the grip and the fixing knob are selectively spaced apart.

6. The system according to claim 5, characterized in that, Silicone positioning elements are provided on both sides of the channel inside the fixed knob, and the silicone positioning elements and the connecting outer tube can be selectively squeezed and positioned.

7. The system according to claim 2, characterized in that, The end of the elastic positioning member away from the operating unit is fixed to the inner connecting tube, and the end of the elastic positioning member close to the operating unit is fixed to the outer connecting tube.

8. The system according to claim 1, characterized in that, The bracket release unit also includes a connector, which is connected to the end of the storage tube away from the release ball.

9. The system according to claim 1, characterized in that, The release ball has a receiving groove at the end away from the receiving tube, and the connecting hose can be selectively accommodated in the receiving groove.

10. A gastric bypass stent system, characterized in that, The system includes a membrane tube support and the system as described in any one of claims 1 to 9, wherein the membrane tube support can be selectively accommodated within the receiving tube.

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