140 results about "Catheter sheath" patented technology

The utility model is suitable for the technical field related to medical instruments, and provides a valve auxiliary system sheath which comprises a shell assembly and a catheter sheath tube arranged on the shell assembly. The bending adjusting handle is used for adjusting the angle of the tail end of the catheter sheathing canal, and the bending adjusting handle is connected with the shell assembly; the catheter sheath is used for being matched with the catheter sheath tube to achieve introduction of an interventional instrument or conveying of an auxiliary instrument; the flushing valve is used for conveying medicaments, and the flushing valve is communicated with the catheter sheath through an extension tube body; the catheter sheath tube, the catheter sheath, the flushing valve and other components are arranged in a matched mode, so that the dilator can be always kept in the catheter sheath tube in the original position in the process that the catheter sheath tube enters the access blood vessel of a patient, blood cannot permeate out of a product, use is convenient, and the valve positioning accuracy and the operation safety are effectively improved.

The invention discloses an intravascular adjustable ultrasonic real-time navigation TIPS puncture instrument, and relates to the technical field of medical devices, the intravascular adjustable ultrasonic real-time navigation TIPS puncture instrument comprises a catheter sheath, a core-through needle catheter, a hollow core-through needle and a solid core-through needle; the core-through needle catheter penetrates through the interior of the catheter sheath; an operating handle is arranged at one end of the through core needle catheter, a traction mechanism is installed on the operating handle, and a pull wire is arranged in the catheter sheath. Real-time ultrasonic images are obtained through the ultrasonic probe, so that an operator can clearly see a needle point path, and key organs such as hepatic artery, bile duct and gall bladder are effectively avoided. The bending-adjustable puncture needle provides the capability of real-time correction in an operation, can easily cope with complex anatomical variation, can keep certain rigidity through the hardness adjusting chain after bending adjustment, improves the penetrating power of the puncture needle, prevents unpredictable mechanical deformation during liver cirrhosis liver puncture, enhances the controllability after bending adjustment, and improves the safety of liver cirrhosis. And accurate execution of the preset angle is ensured.

The sheathing canal with the adjustable pipe diameter comprises a catheter sheath, a connecting pipe and a blood vessel sheath which are sequentially connected to form a channel, the blood vessel sheath comprises a valve body and an adjusting device, the valve body comprises an annular pipe made of an elastic material and a circular truncated cone pipe made of a rigid material, the annular pipe is composed of a plurality of tubular units, and protruding sliding rails are arranged on the tubular units; the circular truncated cone pipe is provided with a sliding groove in the direction of the sliding rail, a connecting ring used for being connected with the sliding rail is arranged between the annular pipe and the circular truncated cone pipe, the connecting ring is an unclosed circular ring, the adjusting device is connected with the connecting ring and penetrates through the sliding groove, and the adjusting device can slide in the direction of the sliding groove. The valve body comprises the annular pipe and the circular truncated cone pipe, the unclosed connecting ring is arranged between the annular pipe and the circular truncated cone pipe, the sliding groove is formed in the circular truncated cone pipe, and the adjusting device is connected with the connecting ring and penetrates through the sliding groove, so that the adjusting device can slide in the direction of the sliding groove, the connecting ring is driven to slide, and finally the pipe diameter of the annular pipe is changed.

The invention relates to a flexible lockable rope-driven mechanical arm system for cardiac resection, which belongs to the technical field of minimally invasive interventional surgical instruments and comprises a flexible mechanical arm component, an end effector component, a near-end connecting seat and a locking component. The flexible mechanical arm assembly is formed by connecting a plurality of guiding discs and a plurality of locking pieces in series, the guiding discs are arranged at intervals, one locking piece is arranged every multiple guiding discs, and the guiding discs are connected with a driving rope in series through a length restraining rod. The near-end connecting base is used for being connected with a catheter sheathing canal or a mechanical arm driving base and providing an inlet for the length restraining rod and the multiple driving ropes. The end effector assembly is used for cardiac muscle resection; according to the flexible mechanical arm assembly, complex three-dimensional path planning in a narrow cardiac cavity and posture locking under a target posture can be achieved, and the positioning precision and posture stability in the myocardial resection process are improved. The end effector assembly includes a telescopic knife and a protective depth limiting structure that reduces the risk of penetrating the ventricular wall and damaging adjacent valves and conduction bundles.

The utility model relates to the technical field of medical instruments, in particular to a catheter sheath base structure convenient to operate, which comprises a main body, and a fixing component is arranged on the side surface of the main body; a larger contact area can be provided through the widened rubber positions growing on the two sides of the sheath tube seat, medical staff can easily hold the sheath tube in the operation process, looseness or displacement caused by external force in the use process is effectively prevented, stress can be better dispersed through the widened rubber positions, and the safety performance of the sheath tube is improved. Shaking caused by movement or improper operation of a patient is reduced, so that the safety and the reliability of an operation are improved, the widened rubber position can provide a larger operation space for medical staff, the operation difficulty can be reduced, the working efficiency can be improved, and especially in an emergency, the clamping ring can move in the axial direction of the sheath tube base, so that the operation is more convenient. And the elastic fixing band is used for adjusting the insertion depth of the sheathing canal body and surrounds the outer side of the sheathing canal body, and the sheathing canal body is fixed and released through tensioning and loosening.

The invention discloses a tracheal catheter special for upper gastrointestinal endoscopic surgery, which comprises an inner tube, an outer tube capable of sliding up and down with the inner tube is sleeved outside the inner tube, the top end of the outer tube is fixedly connected with the inner tube through a fixing knob, a respirator joint is arranged at the top end of the inner tube, an inner tube water bag is arranged at the bottom of the inner tube, and an outer tube water bag is arranged at the bottom of the inner tube. An inner tube suction hole is formed in one side of the inner tube water bag, and a Murphy hole is formed in the position, located below the inner tube water bag, of the bottom of the inner tube. The problems that in an upper gastrointestinal endoscopic surgery in the prior art, the exposed part of the tracheal catheter affects surgical operation, the cuff of the tracheal catheter compresses a surgical site or affects taking out of a specimen, the tracheal catheter rubs with an endoscope and is prone to disengagement to damage tracheal mucosa, and blood and secretions in the trachea are not sucked thoroughly are solved.

The utility model relates to the technical field of catheter sheath regulation and control, especially a sheath type regulation and control device applied to disposable catheter sheaths, which comprises an external assembly frame, a turnover closing cover plate is installed on the assembly surface of the external assembly frame, an internal assembly groove for installing the disposable catheter sheath is arranged on the assembly surface of the external assembly frame and the turnover closing cover plate, and an external adjustment frame is installed on the side wall of the external assembly frame through a flexible connecting belt. The sheath type regulation and control device applied to the disposable catheter sheath adopts a sheath type structure design, can be directly sleeved on the existing catheter sheath, and is very simple and convenient to assemble and disassemble. The external adjustment frame is installed on the side wall of the external assembly frame through the flexible connecting belt, the external adjustment frame is sleeved on the external catheter, and then the flow or temperature of the catheter is adjusted by the hand control adjustment module inside the external control port, so that the operation is very simple and convenient.

The utility model relates to a balloon catheter, belongs to the technical field of medical instruments, and solves the problems that an existing balloon catheter is poor in folding memorability and difficult to restore after pressure relief. A balloon catheter is composed of a tip tube, a balloon, a compression spring, an inner tube, a developing ring, an outer tube, a stress expansion tube and a catheter base. The developing ring is fixed on the inner pipe through bonding or forging and pressing; the compression spring is nested on the inner tube and the developing ring; the stress expansion pipe is a variable-diameter guide pipe and is arranged on the outer pipe in a sleeving mode. According to the balloon catheter, the compression spring is nested on the inner tube of the balloon to provide axial force for the balloon, and under the action of axial tension of the compression spring, the balloon is completely recovered from an expansion state in use to a folding state before use, so that the balloon catheter is easy to fully withdraw.

The utility model discloses a pharyngeal electrical stimulation catheter which comprises a lengthened stomach tube and a catheter sleeve, the surface of the lengthened stomach tube is sleeved with the catheter sleeve, one end of the lengthened stomach tube is provided with a stomach tube reducing sleeve, the end, away from the stomach tube reducing sleeve, of the surface of the catheter sleeve is sleeved with a balloon, and the outer wall of the balloon is provided with a plurality of sets of electrode strips at equal intervals. And a plurality of groups of micro cameras are mounted on the surface of the balloon on one side of the electrode strip at equal intervals. The pharyngeal electrical stimulation catheter is convenient to operate, control and convey to the pharynx for accurate electric shock treatment, visual observation of operation electric shock is facilitated, direct observation of the implantation depth of the pharyngeal electrical stimulation catheter is facilitated, convenience of operation and use of the pharyngeal electrical stimulation catheter is improved, and the pharyngeal electrical stimulation catheter is used as a new treatment means and is worthy of popularization and application. New hope, simple instruments and equipment and operation procedures are brought to patients with dysphagia, so that the patients can be conveniently treated at home or in daily life, and a humanized treatment scheme is provided.

To provide a catheter set capable of performing safe measurement.SOLUTION: A catheter set includes a catheter 15 and a measurement probe. The catheter 15 includes: an opening part 151 arranged on a tip side; a flow channel 156 arranged between the opening part and a rear end side; and a probe duct 157 arranged in parallel with the flow channel 156. The measurement probe includes a light guide body to be insertable to the probe duct 157. The catheter 15 includes a projection prevention part 159 for preventing the light guide body from projecting from a tip side of the probe duct 157.SELECTED DRAWING: Figure 24

The utility model provides a central venous catheter assembly, which comprises a puncture needle, a central venous catheter, a central venous catheter and a central venous catheter, the puncture needle is sleeved with the catheter, and the needle tip of the puncture needle is exposed out of the front end of the catheter; the blood stop valve is arranged at the rear end of the catheter, the blood stop valve is connected with a branch pipe, the branch pipe is provided with a Robert clamp, and a three-way connector is arranged at the tail end of the branch pipe; the standard Luer taper is connected to the tail end of the puncture needle, the standard Luer taper is connected with the blood stop valve, and the standard Luer taper is connected with an external injector or a plug; the needle holder is arranged on the catheter and used for clamping the catheter in the catheter pushing process; and the sensor module is arranged on the catheter and is used for monitoring the physical sign data, processing the physical sign data, comparing the processed physical sign data with a standard threshold value, and generating a warning signal when a preset threshold value is reached. According to the utility model, whether the catheter displaces or leaks liquid can be monitored in real time, so that a clinician can find complications caused by catheter displacement as soon as possible.

The utility model discloses a guide wire separating device for coronary intervention operation, which belongs to the field of cardiovascular medicine and comprises a catheter, a fixing seat sleeved on the catheter and a separating structure used for separating a plurality of guide wires. The separating structure comprises a plurality of through holes formed in the guide pipe in an annular array mode, a conical pipe arranged at the end, away from the guide pipe, of the fixing base and a feeding groove formed in the conical pipe, correspondingly communicated with the through holes and used for guiding guide wires into the through holes. The guide wire separating device is simple in structure and convenient to operate, the guide wire can be effectively prevented from being wound in the catheter, and the safety and the success rate of an operation are improved. Through the arrangement of the through holes distributed in the annular array, a certain distance is kept between the adjacent guide wires, and direct contact and winding between the guide wires are avoided. Due to the design of the conical pipe and the feeding groove, the installation process of the guide wire is simpler, more convenient and faster, and the operation efficiency is improved.

The application relates to a balloon catheter, characterized in that the balloon catheter comprises a balloon, a catheter, a terminal tube, a developing ring, a catheter seat, a stress tube and a catheter sleeve, the catheter comprises an inner tube and an outer tube, the outer tube is sleeved outside the inner tube, the distal end of the inner tube is connected with the proximal end of the terminal tube, the distal end of the balloon is fixed on the outer surface of the terminal tube and / or the inner tube, the proximal end of the balloon is fixed on the outer surface of the distal end of the outer tube, the developing ring is arranged on the inner tube in the balloon, the stress tube is fixed on the distal end of the catheter seat, the proximal end of the inner tube is fixed inside the proximal end of the catheter seat through the stress tube and the catheter seat, the proximal end of the outer tube is fixed inside the distal end of the catheter seat through the stress tube and the catheter seat, and the catheter sleeve is sleeved outside the balloon. The balloon catheter can effectively treat arterial or venous stenosis and the like.

The utility model provides a catheter sheath silica gel pad cutting assistive device capable of accurately cutting notches on the front and back sides of a silica gel pad, the front side of a positioning plate is provided with a positioning groove used for placing the silica gel pad, the shape of the positioning groove is matched with that of the silica gel pad, and the positioning groove and the silica gel pad are in limiting fit. A second kerf is formed in the position, corresponding to the groove bottom of the positioning groove, of the back plate face of the positioning plate, and the first kerf and the second kerf are arranged in an included angle mode. During cutting, the silica gel pad is placed in the positioning groove, the position of the silica gel pad is limited due to the limiting effect of the positioning groove, then the cutter transversely penetrates through the two ends of the positioning groove along the first cutting seam, and a first notch penetrating through the radial direction is cut in the front face of the silica gel pad; and then the cutter cuts a second notch on the back surface of the silica gel pad along the second kerf from the back surface of the positioning plate, and the silica gel pad is still in a limiting state in the process, so that the accuracy of the positions of the first notch and the second notch is ensured.

The invention provides a double-cavity catheter which comprises a catheter body, the catheter body comprises a hollow outer catheter and an inner catheter arranged in the outer catheter, the outer catheter and the inner catheter are arranged in a spaced mode, the inner catheter comprises an inner bonding layer, a metal braid layer and an inner high polymer material layer from inside to outside in the radial direction, and the inner bonding layer is arranged between the metal braid layer and the inner high polymer material layer. The metal braid layer is formed by weaving metal flat filaments, the thickness range of the metal flat filaments is 0.015-0.02 mm, and the width range of the metal flat filaments is 0.1-0.15 mm. According to the double-cavity catheter, the metal woven layer of the inner tube is formed by weaving the metal flat wires with the thickness of 0.015-0.02 mm and the width of 0.1-0.15 mm, under the limiting condition that the wall thickness of the inner tube is strictly controlled to be within 0.25 mm, excellent radial supporting force and bursting resistance can still be provided, the functional requirement for high-pressure injection of a contrast agent in an interventional operation is met, and the function of high-pressure injection of the contrast agent in the interventional operation is achieved. And the whole catheter is ultrathin and small, so that the catheter can pass through a 5Fr catheter sheath.

The invention provides a double-guide-wire sphincter incision knife, and relates to the field of medical instruments. The double-guide-wire sphincter incision knife comprises a catheter sheath, a shredding cavity and two guide wire cavities which are independent of each other are formed in the catheter sheath, and a rapid exchange opening is formed in the side wall of at least one guide wire cavity. The double-guide-wire sphincter incision knife solves the technical problem that in the prior art, a duodenal papilla sphincter incision knife is difficult in guide wire super-selection.

The invention discloses an endoscope medical assembly and a plugging structure thereof, the plugging structure comprises a catheter, a sleeve and a plugging part, and the catheter is used for injecting normal saline into a blood vessel; the sleeve is slidably arranged in the axial direction of the guide pipe. One end of the plugging part is connected with the catheter, and the other end of the plugging part is connected with the sleeve; wherein the sleeve is used for sliding in the direction close to the plugging part so as to drive the plugging part to be opened in the radial direction of the catheter, and the plugging part is used for plugging blood in a blood vessel so as to limit the blood from flowing to a port, where normal saline flows out, of the catheter; when the pressure difference is generated on the two opposite sides of the plugging part, the plugging part is used for allowing normal saline to pass through and flow to the blood. Compared with the prior art, the blocking structure not only can separate blood from normal saline, but also can allow the normal saline to penetrate through when the pressure of the normal saline is too large, the effect of balancing the pressure in the blood vessel is achieved, and damage to the blood vessel caused by the too large pressure is avoided.

The intestinal obstruction catheter kit comprises a catheter, a balloon, a medicine supply connector, a suction connector and an air inlet connector, the catheter is provided with a suction cavity channel, a medicine supply cavity channel and an air inlet cavity channel, the suction cavity channel, the medicine supply cavity channel and the air inlet cavity channel extend in the length direction of the catheter, the suction cavity channel and the medicine supply cavity channel are isolated, and the air inlet connector is connected with the balloon. The balloon is sleeved on the catheter and communicated with the air inlet cavity, the medicine supply connector is connected to the catheter and communicated with the medicine supply cavity, the suction connector is connected to the catheter and communicated with the suction cavity, the air inlet connector is connected to the catheter, and the air inlet connector is communicated with the air inlet cavity. The medicine supply cavity channel is arranged in the catheter and is isolated from the suction cavity channel, so that the problem of clinical cross infection can be solved. The intestinal obstruction catheter kit supports administration aiming at intestinal obstruction conditions and suction treatment of foreign matters at the same time, and is beneficial to accurately, safely and quickly solving the problem of intestinal obstruction.

The application relates to the technical field of medical devices, in particular to an oncology department interventional treatment catheter fixing device, which comprises a plaster body, the plaster body is pasted on the skin on one side of a catheter sheath, and provides support for a catheter body and a fixing assembly; the catheter body is arranged at the top of the plaster body, and the fixing assembly is arranged at the top of the plaster body; the application can set bidirectional cams, limiting columns, positioning stickers and other components, the rotation cooperation relationship between the bidirectional cams and the limiting columns enables the bidirectional cams to dynamically compress and adjust the catheter body through the symmetrically arranged cam block structures, and then the device can realize the effect of stepless adjustment of the tightness of catheter fixing by manually rotating the cam. The structure realizes linear contact between the cam block and the surface of the catheter, effectively disperses local pressure while ensuring fixing strength, combines the initial positioning function of the positioning sticker, and solves the technical problems that traditional adhesive tape fixing is prone to loosening or excessive compression.

The utility model discloses a sealing support plate package of a catheter conveyor, which is characterized in that a support plate is made of an HDPE (high-density polyethylene) plate, the support plate is provided with a clamping belt for fixing a handle of the catheter conveyor along a first straight hole in a folding manner, and the clamping belt is self-locked through a clamping belt body and a clamping groove arranged on the clamping belt body. The two sides of the supporting plate are provided with first turnups playing a protection effect, the end, away from the clamping belt, of the supporting plate is provided with a turning plate preventing the conveyor from moving, and the turning plate can be folded into a turning cover. A plurality of staggered and opposite arc grooves are formed between the clamping belt and the turning cover, and semicircular pieces can be turned out of the arc grooves to fix the catheter sheath. Connection of the clamping belt is achieved through interference fit between the foldable limiting piece and the mounting hole. The support plate is made of HDPE (high-density polyethylene), is compatible with the existing sterilization technology, can be produced by a knife plate, and is simple in structure and high in practicability.

A urinary catheter kit and a method for manufacturing the urinary catheter kit are discussed and shown. The urinary catheter kit comprises a urinary catheter with a catheter shaft extending along an axial direction, at least one eyelet arranged at a proximal insertion end, and a handle arranged at an opposite distal end of the catheter shaft, wherein said handle defines a cavity. The catheter kit further comprises a urine collection bag made of a flexible material. The urine collection bag has a collection bag opening which is attached to the handle so as to enable the urine collection bag to communicate with a central lumen of the catheter shaft via said handle. Wherein the urine collection bag, in a storage state, is compacted and at least partially housed inside the cavity of the handle.

A medical device includes a capacitive micromachined ultrasonic transducer (CMUT) array configured to emit ultrasound to target tissue, and at least one thermoelectric cooler mechanically coupled with the CMUT array and configured to cool non-target tissue heated by the ultrasound. The medical device may be implemented in a catheter together with a solid thermal conductor coupled to the thermoelectric cooler and extending along the catheter, to conduct heat away from the thermoelectric cooler. A catheter or catheter sleeve includes a tubular wall for insertion into a body channel, and at least one thermoelectric cooler coupled to the tubular wall for cooling the body channel wall. A catheter sleeve includes tubular casing for insertion into a body channel and capable of encasing a catheter, and at least one sensor coupled to the tubular casing for sensing one or more properties of the body channel wall, such as temperature and pressure.

The utility model discloses an iodine-125 particle implantation device which comprises an implantation assembly and a storage assembly, the implantation assembly comprises a connecting box, one side of the connecting box is provided with a catheter sheath communicated with an inner cavity of the connecting box, the other side of the connecting box is provided with a fixing cylinder communicated with the inner cavity of the connecting box, and a particle push rod is arranged in the fixing cylinder in a sliding mode. A push handle is fixed to the end of the particle push rod, and the outer side of the particle push rod is sleeved with a reset spring located between the connecting box and the push handle. According to the iodine-125 particle implantation device, after a medical worker implants a single iodine particle through the particle push rod, the particle push rod can be automatically reset and does not need to be pulled back by the medical worker, the implantation device is convenient to use, meanwhile, a plurality of iodine particles can be stored in the storage box, the iodine particles do not need to be supplemented repeatedly, the implantation efficiency of the implantation device in use is improved, and the medical worker can conveniently use the implantation device. And the iodine particles can be automatically supplemented through the arranged pushing assembly, and implantation of the iodine particles is facilitated.

The present disclosure relates generally to the use of medical devices for treating vascular disease. In particular, the present disclosure provides devices and methods for using laser-induced pressure waves generated within a sheath to disrupt intimal and medial calcium within a vessel.

The utility model discloses an easy to operate's catheter sheath belongs to medical technical field, including catheter sheath subassembly and dilator still includes locking assembly and cutting adjustment subassembly, the dilator is used in cooperation and is inserted with catheter sheath subassembly, and the locking between catheter sheath subassembly and dilator is locked with locking assembly, and locking assembly is connected with catheter sheath subassembly, the cutting adjustment subassembly includes cutting assembly and adjustment assembly, through above -mentioned mode, the utility model has realized the tearing of catheter sheath subassembly conveniently.

The utility model provides a supporting catheter, and belongs to the technical field of interventional operation instruments. The supporting catheter comprises a catheter body, an adjusting section is arranged at the far end of the catheter body, the adjusting section is used for extending to the thrombus position from the far end of a catheter sheath, a spirally-extending groove is formed in the inner side wall of the adjusting section, a filling component is arranged at the position, located at the near end of the adjusting section, in a catheter cavity of the catheter body, and the groove can be filled with the filling component. The supporting performance of the adjusting section is improved; accurate switching between flexibility and supporting performance in different stages is achieved, and the thrombectomy stent conveying accuracy and the interventional operation success rate are improved.

The application provides a visual 360-degree adjustable bending catheter sheath, which comprises a tube assembly, a visual assembly, a plurality of traction wires and a plurality of operating members, the tube assembly comprises an inner tube, an outer tube and a plurality of containing tubes, the outer tube is wrapped outside the inner tube, a plurality of containing tubes are arranged between the outer tube and the inner tube, and the plurality of containing tubes are arranged in a circumferential interval around the inner tube; the visual assembly is arranged at the distal end of the tube assembly; each traction wire is contained in a containing tube; the operating members are arranged at the proximal end of the tube assembly; the distal end of each traction wire is fixed to the distal end of the tube assembly, and the proximal end of the traction wire is connected to one operating member; the operating members can be independently operated to make the distal end of the tube assembly bend by tensioning or releasing the corresponding traction wire, can provide a real-time intravascular field of view for an operator in an interventional operation, and has a multi-directional precise bending adjustment capability.

This invention belongs to the field of medical device technology, specifically relating to a pediatric gastrointestinal lavage device. The device includes a gastric lavage machine body with a placement groove inside. A flushing connector is located at the upper end of the placement groove. It also includes a gastric tube comprising an inner tube and an outer tube. The inner tube is sleeved on the outside of the flushing connector, and the outer tube is coaxially disposed on the outside of the inner tube. The sidewall of the inner tube has multiple flow-blocking holes spaced evenly along the axial direction. These flow-blocking holes are composed of multiple clearance holes located in the same radial cross-section. This invention, by setting an elastic flow-blocking membrane adapted to the flow-blocking hole array on the inner tube, allows the device to automatically reduce the effective flow diameter of the tube when the negative pressure exceeds a threshold, achieving precise flow restriction and pressure reduction, and preventing damage to the delicate gastric mucosa of children due to high negative pressure.

1. The name of the design product: balloon occlusion catheter sheath. 2. The use of the design product: occlusion catheter sheath kit for introducing guide wire, balloon and medical instrument into patient's blood vessel system in percutaneous interventional operation. 3. The design points of the design product: in shape. 4. The picture or photo best indicating the design points: perspective view.

A hemostasis valve, a catheter sheath, and a method for sealing an interventional instrument (9), the hemostasis valve comprising a housing (1,100) and a sealing film (2,130) which is installed within the housing (1,100) and which is a tubular structure; an inner cavity (21) of the tubular structure serves as an instrument channel (11,131) and penetrates the housing (1,100); driving chambers (12,150) which are located on the periphery of the sealing film (2,130) and which are used for being filled with a fluid are provided within the housing (1,100); the hemostasis valve further comprises an energy storage mechanism (3) that can link with the fluid; the energy storage mechanism (3) correspondingly stores or releases energy when the state of the sealing film (2,130) changes; and the sealing film (2,130) is driven to seal the instrument channel (11,131) during energy release. By means of the design of the energy storage mechanism (3), deformation energy of the sealing film (2,130) is stored, thereby achieving good compatibility and a good sealing effect when different instruments pass through; in addition, by means of the configuration of parameters of the sealing film (2,130), the configuration of parameters of an energy storage structure, and the cooperation between the two, the advantages of good drawing operation feeling and small operating force changes of an instrument are achieved, and a structural basis is provided for other functions.