A blood clot removal device through a gastroenteroscopic instrument channel

Abstract

The present invention discloses a blood clot removal device through a gastroenteroscopic instrument channel, which belongs to the technical field of medical devices. The device can push the blood clot in a closed state of a shape memory alloy mesh basket, and can control the opening size of the shape memory alloy mesh basket by heating and cooling it with water, thereby accommodating blood clots of different sizes. The inner side of the shape memory alloy mesh basket is provided with barbs, and the shape memory alloy wires of the mesh basket are connected by a film, which, combined with a water-gas path, can prevent the blood clot from being damaged and falling off during the removal process. A mesh basket rotation button is provided at the far end of the driving handle, which can control the rotation of the mesh basket to crush the blood clot, and use the water-gas path to suck out the crushed blood clot, and the bending part can be controlled to bend in four directions, thereby more accurately locating the position of the blood clot.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and more specifically, relates to a blood clot removal device through a gastroenteroscopic instrument channel. Background Art

[0002] Gastrointestinal bleeding is a common clinical syndrome and can be caused by a variety of diseases. The digestive tract refers to the tube from the esophagus to the anus, including the esophagus, stomach, duodenum, jejunum, ileum, cecum, colon and rectum. Gastrointestinal bleeding can be caused by inflammation, mechanical injury, vascular lesions, tumors and other factors of the digestive tract itself, or by lesions of adjacent organs and systemic diseases involving the digestive tract. Therefore, in the clinical diagnosis and treatment of gastroenterology, patients with common blood clots in the digestive tract have relatively shallow blood clots in the esophagus, which can be removed by doctors using instruments such as tweezers; when blood clots appear in the colorectum or stomach, due to their deeper location, existing instruments are often difficult to remove. The traditional open surgical method of removing blood clots is too damaging to the patient's body. Here, a blood clot removal device is designed through the gastroscope instrument channel, which can remove blood clots under a gastroscope.

[0003] The current patent number is CN202020625859.2, which is a gastroscopic forceps blood clot removal device. A removal device has been conceived, but the device of this design is a straight-through type, and cannot better adjust the curvature itself. It contacts the blood clot by frontal contact and wraps it, which can easily cause the blood clot to slide and easily touch the stomach. The structure of this design is precisely positioned, and is inserted into the blood clot. It contacts the blood clot by opening and closing, and cooperates with the barbs to achieve complete removal. At the same time, the blood clot can be crushed and sucked out by negative pressure. Summary of the invention

[0004] 1. Technical problem to be solved by the invention

[0005] The object of the present invention is to solve the above-mentioned drawbacks.

[0006] 2. Technical solution

[0007] In order to achieve the above object, the technical solution provided by the present invention is:

[0008] The present invention discloses a blood clot removal device for passing through a gastroenteroscopic instrument channel, comprising a blood clot removal device and an integrated host, wherein the blood clot removal device is composed of a shape memory alloy basket, a four-way bending portion, a flexible rod body, an outer sheath tube and a driving handle, wherein the front end of the driving handle is connected to the rear end of the four-way bending portion through the flexible rod body, the front end of the four-way bending portion is equipped with a shape memory alloy basket, the outer side of the flexible rod body is sleeved with an outer sheath tube, the tail of the driving handle is connected to the integrated host through a connecting line, a water-gas circuit button, a bending portion driving knob, a heating button and a basket rotation button are integrated on the driving handle, a water-gas circuit tube is provided in the connecting line, the driving handle and the flexible rod body, the water-gas circuit button controls the on-off of the water-gas circuit tube, a heating device is provided in the driving handle, the heating button controls the heating device, the basket rotation button controls the shape memory alloy basket, and the bending portion driving knob controls the bending of the four-way bending portion.

[0009] Preferably, the shape memory alloy basket is a basket-like structure formed by weaving a plurality of shape memory alloy wires. Barbs are distributed on the inner side of the shape memory alloy basket so as to be inserted into the blood clot. The plurality of shape memory alloy wires are connected by a thin film.

[0010] Preferably, a push-pull slider is provided in the driving handle, one end of which passes through the driving handle and extends outward, and the push-pull slider can slide back and forth in the driving handle along the axial direction of the driving handle. A traction wire is provided on the push-pull slider, and the traction wire passes through the flexible rod body to connect to the inside of the shape memory alloy mesh basket, and the opening and closing of the shape memory alloy mesh basket is controlled by the push-pull slider.

[0011] Preferably, one end of the water-gas pipe is inserted into the integrated host, and the other end is inserted into the interior of the shape memory alloy basket, and a section of the water-gas pipe located inside the flexible rod body is coaxial with the flexible rod body.

[0012] Preferably, the four-image bending part is composed of a bending skeleton, a driving wire and an external bending rubber. Four driving wires are evenly distributed on the inner side of the bending skeleton along the circumferential direction. The four driving wires all pass through the bending skeleton. The bending rubber covers the bending skeleton and the driving wire. The flexible rod passes through the bending rubber and extends outward. The outer sheath is in contact with the bending rubber. The four driving wires are connected to the bending driving knob.

[0013] Preferably, the bending portion driving knob is formed by two axle paddle wheels coaxially arranged up and down, and the two axle paddle wheels can rotate relatively and independently drive a pair of driving wires respectively.

[0014] Preferably, a motor is provided in the driving handle, and gears are provided on the output end of the motor and the end of the flexible rod extending into the driving handle for meshing connection. The basket rotation button controls the operation of the motor, thereby controlling the rotation of the flexible rod to drive the shape memory alloy basket to rotate.

[0015] Preferably, the bending skeleton is a cylindrical structure as a whole, on which are distributed notches arranged in an axially staggered manner, and a through hole is provided inside, and the driving wire is located in the through hole.

[0016] Preferably, the curved skeleton can be a continuous skeleton made of a stainless steel tube or a shape memory alloy tube by laser cutting or wire cutting, or can be made by riveting annular joints.

[0017] Preferably, the heating device comprises a power supply and a heating module, and the heating module heats the water-gas pipe.

[0018] 3. Beneficial effects

[0019] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0020] (1) The present invention discloses a blood clot removal device that passes through a gastroenteroscopic instrument channel. The device can push the blood clot when the shape memory alloy basket is in a closed state, and can control the opening size of the shape memory alloy basket by heating and cooling it with water, thereby accommodating blood clots of different sizes. The inner side of the shape memory alloy basket is provided with barbs, and the shape memory alloy wires of the basket are connected by a thin film, which, combined with a water-gas path, can prevent the blood clot from being damaged and falling off during the removal process. A basket rotation button is provided at the far end of the driving handle, which can control the rotation of the basket to crush the blood clot, and the crushed blood clot is sucked out by the water-gas path. The bending portion can be controlled to bend in four directions, thereby more accurately locating the position of the blood clot. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a blood clot removal device through a gastroenteroscopic instrument channel of the present invention;

[0022] Figure 2 It is a structural schematic diagram of a blood clot removal device through a gastroenteroscopic instrument channel of the present invention;

[0023] Figure 3 It is a top view of a driving handle of a blood clot removal device through a gastroenteroscopic instrument channel of the present invention;

[0024] Figure 4 It is a schematic structural diagram of a driving handle of a blood clot removal device through a gastrointestinal endoscope instrument channel of the present invention;

[0025] Figure 5 It is a schematic structural diagram of a four-way bending portion of a blood clot removal device through a gastroenteroscopic instrument channel of the present invention;

[0026] Figure 6 It is a schematic structural diagram of a curved skeleton of a blood clot removal device through a gastroenteroscopic instrument channel of the present invention;

[0027] Figure 7 It is a schematic diagram of the internal structure of a curved skeleton of a blood clot removal device through a gastroenteroscopic instrument channel of the present invention;

[0028] Figure 8 It is a schematic structural diagram of a driving knob of a curved portion of a blood clot removal device through a gastrointestinal endoscopic instrument channel of the present invention;

[0029] Fig. 9 It is a schematic diagram of the natural state of a shape memory alloy basket of a blood clot removal device through a gastroenteroscopic instrument channel of the present invention;

[0030] Fig.10 It is a schematic diagram of a shape memory alloy basket in an open state of a blood clot removal device through a gastrointestinal endoscope instrument channel of the present invention;

[0031] Fig.11 It is a schematic diagram of the retracted state of a shape memory alloy basket of a blood clot removal device through a gastroenteroscopic instrument channel of the present invention when removing a blood clot.

[0032] Explanation of the symbols in the schematic diagram:

[0033] 100. blood clot removal device; 110. shape memory alloy basket; 120. four-way bending part;

[0034] 121, bending skeleton; 122, driving wire; 123, external bending rubber; 130, flexible rod;

[0035] 140, outer sheath; 150, driving handle; 151, water and gas path button; 152, bending part driving knob;

[0036] 153. Heating button; 154. Basket rotation button; 155. Heating device; 156. Push-pull slider;

[0037] 157, traction wire; 158, heating module; 159, power supply; 160, dial wheel; 170, water and gas pipeline;

[0038] 180, Motor;

[0039] 200. Integrated host. DETAILED DESCRIPTION

[0040] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0041] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may also be a central element; when an element is considered to be "connected to" another element, it may be directly connected to the other element or there may also be a central element; the terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs; the terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more related listed items.

[0043] See attached Figure 1-11 As shown, a blood clot removal device through a gastrointestinal endoscopic instrument channel of the present embodiment includes a blood clot removal device 100 and an integrated host 200. The blood clot removal device 100 is composed of a shape memory alloy basket 110, a four-way bending portion 120, a flexible rod body 130, an outer sheath tube 140 and a driving handle 150. The front end of the driving handle 150 is connected to the rear end of the four-way bending portion 120 through the flexible rod body 130. The front end of the four-way bending portion 120 is installed with the shape memory alloy basket 110, the outer side of the flexible rod body 130 is covered with the outer sheath tube 140, and the tail of the driving handle 150 is connected to the rear end of the four-way bending portion 120 through the flexible rod body 130. The wiring is connected to the integrated host 200, and the driving handle 150 is integrated with a water and gas circuit button 151, a bending part driving knob 152, a heating button 153 and a basket rotation button 154. A water and gas circuit tube 170 is provided in the connecting wire, the driving handle 150 and the flexible rod body 130. The water and gas circuit button 151 controls the on-off of the water and gas circuit tube 170. A heating device 155 is provided in the driving handle 150, and the heating button 153 controls the heating device 155. The basket rotation button 154 controls the shape memory alloy basket 110, and the bending part driving knob 152 controls the bending of the four-way bending part 120.

[0044] The shape memory alloy basket 110 of this embodiment is a basket-like structure formed by weaving a plurality of shape memory alloy wires. Barbs are distributed on the inner side of the shape memory alloy basket 110 so as to be inserted into a blood clot. The plurality of shape memory alloy wires are connected by a thin film.

[0045] This structure can be inserted into a blood clot and hooked by the barbs for pulling and movement.

[0046] A push-pull slider 156 is provided in the driving handle 150 of this embodiment. One end of the push-pull slider 156 extends outward through the driving handle 150. The push-pull slider 156 can slide back and forth along the axial direction of the driving handle 150 in the driving handle 150. A traction wire 157 is provided on the push-pull slider 156. The traction wire 157 passes through the flexible rod body 130 and is connected to the inside of the shape memory alloy basket 110. The opening and closing of the shape memory alloy basket 110 is controlled by the push-pull slider 156.

[0047] One end of the water-gas pipe 170 of this embodiment is inserted into the integrated host 200 , and the other end is inserted into the interior of the shape memory alloy basket 110 . The section of the water-gas pipe located inside the flexible rod 130 is coaxial with the flexible rod 130 .

[0048] The four-image bending part of this embodiment is composed of a bending skeleton 121, a driving wire 122 and an external bending rubber 123. Four driving wires 122 are evenly distributed on the inner side of the bending skeleton 121 along the circumferential direction. The four driving wires 122 all penetrate the bending skeleton. The bending rubber covers the bending skeleton 121 and the driving wire 122. The flexible rod body 130 passes through the bending rubber and extends outward. The outer sheath 140 is in contact with the bending rubber. The four driving wires 122 are connected to the bending driving knob 152.

[0049] The bending portion driving knob 152 of the present embodiment is formed by two shaft-shaped dial wheels 160 coaxially arranged up and down. The two shaft-shaped dial wheels 160 can rotate relatively and independently drive a pair of driving wires 122 respectively.

[0050] The above structure can realize the four-way bending of the four-way bending portion 120 .

[0051] In the present embodiment, a motor 180 is provided in the driving handle 150, and gears are provided on the output end of the motor 180 and the end of the flexible rod body 130 extending into the driving handle 150 for meshing connection. The basket rotation button 154 controls the operation of the motor 180, thereby controlling the rotation of the flexible rod body 130 to drive the shape memory alloy basket 110 to rotate.

[0052] The bending skeleton 121 of the present embodiment is a cylindrical structure as a whole, on which are distributed notches arranged in an axially staggered manner, and a through hole is provided inside, and the driving wire 122 is located in the through hole.

[0053] The curved skeleton 121 of this embodiment can be a continuous skeleton made of a stainless steel tube or a shape memory alloy tube through laser cutting or wire cutting, or can be made by riveting annular joints.

[0054] The heating device 155 of this embodiment includes a power source 159 and a heating module 158 . The heating module 158 heats the traction wire 157 and transfers the heat to the shape memory alloy basket 110 .

[0055] Specific implementation method one: the opening angle of the shape memory alloy basket 110 is controlled by different heating temperatures to adapt to blood clots of different sizes. The closure of the basket can be controlled by pumping water. At the same time, barbs are arranged on the inner side of the shape memory alloy basket 110. The shape memory alloy wires of the shape memory alloy basket 110 are connected by a film to prevent the blood clots entering the shape memory alloy basket 110 from falling off during the removal process. The water and gas path is coaxial with the core of the flexible rod body 130, and passes from the integrated host 200 through the rear end interface of the driving handle 150 to the distal shape memory alloy basket 110, so that the blood clots slightly away can be adsorbed to the shape memory alloy basket 110 and the blood clots can be ensured. The blood clot will not fall off during the removal process; a basket rotation driving button is provided at the distal end of the driving handle 150, which can control the rotation of the shape memory alloy basket 110 to crush the blood clot, and use the water-gas path to suck out the crushed blood clot; two coaxial driving knobs are provided above the driving handle 150 to control the direction adjustment of the distal four-way bending part 120 to more accurately locate the blood clot; a water-gas path button 151 and a heating button 153 are also provided above the handle, which are used to control the on-off of the water-gas path and the heating degree of the shape memory alloy basket 110 respectively; a push-pull slider 156 is provided at the bottom of the driving handle 150 to control the opening and closing of the shape memory alloy basket 110.

[0056] Specific implementation method 2: During the diagnosis and treatment of gastroenteroscopy, when the location of the blood clot is deep and it is difficult to remove the blood clot by grabbing or suction, the blood clot removal device 100 designed by the present invention can be inserted along the instrument channel of the gastroenteroscopy. Under the visual condition of the gastroenteroscopy, the four-way bending part 120 can be controlled to align with the location of the blood clot by adjusting the bending part driving knob 152, and the blood clot can be pushed in the closed state of the shape memory alloy basket 110, or the heating button 153 can be pressed to heat or cool the shape memory alloy basket 110 with water, so as to adjust the opening angle of the shape memory alloy basket 110, push the push-pull slider 156 to let the basket wrap the blood clot, press the water and gas circuit button 151, so that the water and gas circuit tube 170 absorbs the blood clot, and then continue to cool with water to restore the shape memory alloy basket 110 to the closed state, wrap the blood clot and hook the blood clot through the barbs, and at this time, the dual role of the basket film and the barbs can prevent the blood clot from falling off. At this time, the push-pull slider 156 is pulled back to completely close the basket and withdraw the blood clot removal device 100 from the gastroenteroscope along the instrument pipeline of the gastroenteroscope. After cleaning and disinfection, the above actions can be repeated to continue to remove blood clots.

[0057] If the blood clot is found to be large under visual conditions under a gastroenteroscopy and is difficult to be directly removed by the blood clot removal device 100, after aligning the location of the blood clot, press the basket rotation drive button to rotate the shape memory alloy basket 110 to break up the larger blood clot, and then repeat the above steps to remove the blood clots in batches, or remove smaller blood clots through negative pressure suction through the water-gas circuit.

[0058] The above-described embodiments only express a certain implementation mode of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A blood clot removal device through a gastrointestinal endoscope instrument channel, comprising a shape memory alloy mesh basket (110), a four-way bending portion (120), a flexible rod body (130), an outer sheath tube (140), a driving handle (150) and an integrated host (200), wherein the front end of the driving handle (150) is connected to the rear end of the four-way bending portion (120) through the flexible rod body (130), the front end of the four-way bending portion (120) is installed with the shape memory alloy mesh basket (110), the outer side of the flexible rod body (130) is covered with the outer sheath tube (140), the rear end of the driving handle (150) is connected to the integrated host (200) through a connecting line, and the driving handle (150) is integrated with a water and gas path button (151), a bending portion driving knob (152), and a rotating knob (153) for rotating the driving handle (150). 2), a heating button (153) and a basket rotation button (154), a water-gas line tube (170) is provided in the connecting line, the driving handle (150) and the flexible rod body (130), the water-gas line button (151) controls the on-off of the water-gas line tube (170), a heating device (155) is provided in the driving handle (150), the heating button (153) controls the heating device (155), the basket rotation button (154) controls the shape memory alloy basket (110), the bending portion driving knob (152) controls the bending of the four-way bending portion (120), the heating device (155) comprises a power supply (159) and a heating module (158), and the heating module (158) heats the water-gas line tube (170); A push-pull slider (156) is provided in the driving handle (150), one end of the push-pull slider (156) passes through the driving handle (150) and extends outward, and the push-pull slider (156) can slide forward and backward along the axial direction of the driving handle (150) in the driving handle (150), and a traction wire (157) is provided on the push-pull slider (156), and the traction wire (157) passes through the flexible rod body (130) and is connected to the inside of the shape memory alloy basket (110). The block (156) can control the opening and closing of the shape memory alloy mesh basket (110), the heating button (153) is used to control the degree of heating of the shape memory alloy mesh basket (110), heat the shape memory alloy mesh basket (110) or cool it with water, thereby adjusting the opening angle of the shape memory alloy mesh basket (110), and pressing the water-gas circuit button (151) allows the water-gas circuit pipe (170) to absorb the blood clot, so that the shape memory alloy mesh basket (110) returns to the closed state.

2. The blood clot removal device through the gastrointestinal endoscopic instrument channel according to claim 1, characterized in that: The shape memory alloy basket (110) is a basket-like structure formed by weaving a plurality of shape memory alloy wires. Barbs are distributed on the inner side of the shape memory alloy basket (110) so as to be inserted into a blood clot. The plurality of shape memory alloy wires are connected by a thin film.

3. The blood clot removal device through the gastrointestinal endoscopic instrument channel according to claim 1, characterized in that: One end of the water-gas pipe (170) is inserted into the integrated host (200), and the other end is inserted into the interior of the shape memory alloy basket (110). The section of the water-gas pipe located inside the flexible rod body (130) is coaxial with the flexible rod body (130).

4. The blood clot removal device through the gastrointestinal endoscopic instrument channel according to claim 1, characterized in that: The four-way bending part is composed of a bending skeleton (121), a driving wire (122) and an external bending rubber (123); four driving wires (122) are evenly distributed along the circumferential direction on the inner side of the bending skeleton (121); the four driving wires (122) all penetrate the bending skeleton; the bending rubber covers the bending skeleton (121) and the driving wire (122); the flexible rod (130) penetrates the bending rubber and extends outward; the outer sheath (140) contacts the bending rubber; and the four driving wires (122) are connected to the bending driving knob (152).

5. The blood clot removal device through the gastrointestinal endoscopic instrument channel according to claim 4, characterized in that: The bending portion driving knob (152) is formed by two shaft-belt dial wheels (160) coaxially arranged up and down. The two shaft-belt dial wheels (160) can rotate relative to each other and independently drive a pair of driving wires (122).

6. The blood clot removal device through the gastrointestinal endoscopic instrument channel according to claim 1, characterized in that: The driving handle (150) is provided with a motor (180), and the output end of the motor (180) and one end of the flexible rod body (130) extending into the driving handle (150) are both provided with gears for meshing connection, and the basket rotation button (154) controls the operation of the motor (180), thereby controlling the rotation of the flexible rod body (130) to drive the shape memory alloy basket (110) to rotate.

7. The blood clot removal device through the gastrointestinal endoscopic instrument channel according to claim 4, characterized in that: The curved skeleton (121) is a cylindrical structure as a whole, with axially staggered notches distributed thereon, and a through hole is provided inside, and the driving wire (122) is located in the through hole.

8. The blood clot removal device through the gastrointestinal endoscopic instrument channel according to claim 4, characterized in that: The curved skeleton (121) is a continuous skeleton made of a stainless steel tube or a shape memory alloy tube by laser cutting or wire cutting technology, or is made by riveting annular joints.

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