CN111870395A

CN111870395A - Press-holding system and press-holding method

Info

Publication number: CN111870395A
Application number: CN202010732430.8A
Authority: CN
Inventors: 王思维; 王海山; 虞奇峰; 秦涛
Original assignee: Shanghai Newmed Medical Co Ltd
Current assignee: Shanghai Newmed Medical Co Ltd
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2020-11-03
Anticipated expiration: 2040-07-27
Also published as: CN111870395B

Abstract

The invention relates to the technical field of medical instruments and discloses a crimping system and a crimping method. The pressing and holding system comprises a valve pressing and holding machine, a handheld pressing and holding device, a conveyor, a pressing and holding sponge and a pressing and holding film, wherein the valve pressing and holding machine is used for performing first-stage pressing and holding on the valve, and the handheld pressing and holding device is used for performing second-stage pressing and holding on the valve; the pressing sponge is used in the first-stage pressing, the pressing sponge is of a cylindrical structure, and the valve is arranged in the pressing sponge in a penetrating way; the pressing and holding film is used in the second stage pressing and holding, the pressing and holding film is of a cylindrical structure, the valve after the first stage pressing and holding is arranged in the pressing and holding film in a penetrating mode, and the handheld pressing and holding device is provided with a self-locking structure. The pressing and holding method utilizes a valve pressing and holding machine to perform first-stage pressing and holding on the valve and utilizes a handheld pressing and holding device to perform second-stage pressing and holding on the valve. The invention can effectively prevent the valve from breaking in the process of crimping and prevent the valve from rebounding after crimping.

Description

Press-holding system and press-holding method

Technical Field

The invention relates to the technical field of medical instruments, in particular to a pressing and holding system and a pressing and holding method.

Background

With the continuous expansion of the application range of the ball valve in the heart valve replacement operation, how to quickly and effectively install the ball valve on a conveyor of the valve replacement operation becomes a problem of important attention at the present stage. One such device used to address such problems is a valve crimping machine.

However, the existing valve crimping machine and crimping method cannot effectively protect the valve in the crimping process, so that the valve is easily stressed and broken when being crimped; in addition, the existing valve press-gripping machine cannot prevent the valve from rebounding after the valve is pressed and gripped, and the outer diameter of the valve is increased after the valve rebounds, so that risks are brought to the operation.

Therefore, a need exists for a crimping system and method that prevents valve rupture and recoil to address the above problems.

Disclosure of Invention

Based on the above, the present invention is directed to a crimping system and a crimping method, which can effectively prevent a valve from being broken during crimping and prevent the valve from springing back after crimping.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a crimping system, which comprises a valve crimping machine, a handheld crimping device, a crimping sponge and a crimping film, wherein the valve crimping machine is used for crimping a valve at a first stage, and the handheld crimping device is used for crimping the valve at a second stage; the pressing sponge is used in the first-stage pressing, the pressing sponge is of a cylindrical structure, the valve is arranged in the pressing sponge in a penetrating mode, the assembled valve and the pressing sponge are placed at the appointed position of the conveyor together, and the assembled valve, the pressing sponge and the conveyor penetrate into a pressing opening of the valve pressing machine together during pressing; the pressing and holding film is used in the second-stage pressing and holding, the pressing and holding film is of a cylindrical structure, the valve after the first-stage pressing and holding is arranged in the pressing and holding film in a penetrating mode, the assembled valve and the pressing and holding film are placed at the appointed position of the conveyor together, and during pressing and holding, the assembled valve, the pressing and holding film and the conveyor penetrate into a pressing and holding opening of the handheld pressing and holding device together and are locked in the pressing and holding opening of the handheld pressing and holding device through a self-locking structure of the handheld pressing and holding device after the pressing and holding are in place.

As a preferable scheme of the crimping system, the two sets of handheld crimping devices are provided, and in the second stage crimping, the two sets of handheld crimping devices are respectively crimped at two ends of the valve.

As a preferable scheme of the crimping system, in a released state, the inner diameter of the crimping sponge is larger than the outer diameter of the valve before crimping, and the outer diameter of the crimping sponge is smaller than the inner diameter of a crimping opening of the valve crimping machine in the released state;

in the release state, the inner diameter of the pressing and holding film is larger than the outer diameter of the valve after the first-stage pressing and holding is finished, and the outer diameter of the pressing and holding film is smaller than the inner diameter of the pressing and holding opening of the handheld pressing and holding device in the release state.

Preferably, the crimping system further comprises a crimping core, wherein the crimping core is used for penetrating into the conveyor before the first stage crimping and being extracted from the conveyor before the beginning of the formal operation after the second stage crimping is finished.

As a preferable aspect of a crimping system, the valve crimping machine includes:

the base is provided with a first buckle;

the supporting frame is provided with a first communication port, a second buckle and a third buckle, and the second buckle is matched with the first buckle to fix the supporting frame on the base;

the handle cover is provided with a second communication port which is communicated with the first communication port, the handle cover is rotatably arranged on the support frame, and a plurality of first arc-shaped grooves are formed in the inner side of the handle cover;

the fixing cover is provided with a third communicating port, the third communicating port is communicated with the second communicating port and the first communicating port, the fixing cover is arranged in the handle cover, the fixing cover is provided with a fourth buckle, the fourth buckle is matched with the third buckle to fix the fixing cover and the support frame, and the fixing cover is provided with a sliding groove;

the clamping pieces are uniformly arranged in the fixed cover along the circumferential direction, first protrusions and second protrusions are arranged on the clamping pieces, the first protrusions are in sliding connection with the sliding grooves, and the second protrusions are in sliding connection with the first arc-shaped grooves;

the limiting part is arranged on the base and located below the handle of the handle cover, and the limiting part is used for limiting the rotating position of the handle cover.

As a preferable scheme of the pressing and holding system, the handle cover comprises two handle cover split bodies which are butted with each other, a fifth buckle is arranged along the circumferential wall of the handle cover split body, and the two handle cover split bodies are fixedly connected through the fifth buckle.

As a preferred scheme of the pressing and holding system, the support frame comprises two support frame split bodies which are mutually butted, a sixth buckle is arranged on each support frame split body, and the two support frame split bodies are fixedly connected through the sixth buckle.

As a preferable scheme of the crimping system, the fixing cover comprises two fixing cover split bodies which are butted with each other, and the two fixing cover split bodies are fixedly connected through a fastener.

As a preferred scheme of the press-holding system, the limiting member includes an upper limiting member and a lower limiting member, the lower limiting member is disposed on the base, and the upper limiting member and the lower limiting member are detachably connected.

As a preferable scheme of the press-holding system, the lower-end limiting piece is provided with a seventh buckle and an eighth buckle, the upper-end limiting piece is provided with a ninth buckle, and the base is provided with a tenth buckle; the seventh buckle and the tenth buckle are matched to fix the lower end limiting part on the base, and the eighth buckle and the ninth buckle are matched to fix the upper end limiting part and the lower end limiting part.

As a preferred scheme of the pressing and holding system, the fixed cover is further provided with a sliding guide rail, the clamping piece is provided with a sliding groove, and the sliding groove is in sliding connection with the sliding guide rail.

As a preferable scheme of the press-holding system, each of the handle cover split bodies of the handle cover is provided with four first arc-shaped grooves, and the fixing cover is provided with twelve clamping pieces, wherein the second protrusions of every three clamping pieces share one first arc-shaped groove.

As a preferable scheme of the pressing and holding system, the tail end of each clamping piece is provided with a concave structure, the concave structures of the plurality of clamping pieces are sequentially arranged along the circumferential direction, and the concave structures can be sequentially attached in the pressing and holding process.

As a preferable scheme of the pressing and holding system, the head end of the clamping piece is hollowed out and provided with a reinforcing rib.

As a preferable aspect of the press-grip system, the hand-held press-grip device includes:

the fixed rod comprises two first cover bodies which are fixedly buckled, a fourth communication port is formed in the center of each first cover body, and a plurality of second arc-shaped grooves and a plurality of fixing pins are formed in the first cover bodies along the circumferential direction;

the movable rod is arranged in the fixed rod and can coaxially rotate relative to the fixed rod, the movable rod comprises two second cover bodies which are fixedly buckled, the second cover bodies are provided with fifth communication ports, the fifth communication ports are communicated with the fourth communication ports, the second cover bodies are circumferentially provided with a plurality of third arc-shaped grooves and a plurality of first straight grooves, the first straight grooves extend along the radial direction of the movable rod, and the fixed pins are inserted in the third arc-shaped grooves in a sliding mode;

the clamping blocks are uniformly arranged in the moving rod along the circumferential direction, third protrusions are arranged on two sides of each clamping block, fourth protrusions are arranged on the third protrusions, the third protrusions are inserted into the first straight grooves in a sliding mode, the fourth protrusions are inserted into the second arc-shaped grooves in a sliding mode, and when the moving rod rotates relative to the fixed rod, the clamping blocks move in a reciprocating mode along the radial direction of the moving rod to increase or reduce the pressing and holding opening of the handheld pressing and holding device; the self-locking structure is arranged on the clamping blocks, and the clamping blocks can be sequentially locked through the self-locking structure after being pressed and held in place.

As a preferred scheme of the pressing and holding system, a plurality of gear structures are arranged on the inner side of the moving rod, the gear structures and the first straight grooves are arranged in a one-to-one correspondence manner, each pair of corresponding gear structures and the first straight grooves are parallel to each other, and when the plurality of clamping blocks are installed, the outer sides of the clamping blocks are respectively attached to the corresponding gear structures.

As a preferable scheme of the press-holding system, the clamping blocks are provided with concave parts, and a plurality of clamping blocks can be sequentially attached to each other through the concave parts in the press-holding process.

As a preferable scheme of the crimping system, the self-locking structure comprises a first locking portion arranged on the inner side of the concave portion and a second locking portion arranged on the outer side of the concave portion, and two adjacent clamping blocks can be locked through the cooperation of the first locking portion and the second locking portion in the crimping process.

As a preferred scheme of the press-holding system, the tail end of the clamping block is provided with a splicing corner, the splicing corner comprises a first straight edge and a second straight edge which are arranged at an angle, and a transition circular arc connected between the first straight edge and the second straight edge, wherein the first straight edge is close to the tail end of the clamping block, and when the hand-held press-holding device is pressed to a minimum diameter, the clamping openings of the hand-held press-holding device form a regular polygon with a round angle through the plurality of splicing corners of the clamping block.

As a preferable scheme of the crimping system, the number of the clamping blocks is six, the angle between the first straight edge and the second straight edge is 150 degrees, and when the handheld crimping device is crimped to a minimum diameter, the splicing angles of the six clamping blocks enable the crimping mouth of the handheld crimping device to form a regular dodecagon with round corners.

As a preferred scheme of the press-holding system, the clamping block is made of a self-lubricating material, and surface grains of the clamping block are consistent with the moving direction of the clamping block relative to the moving rod and the relative moving direction between adjacent clamping blocks.

As a preferable scheme of the crimping system, the third protrusion on the clamping block is a rectangular protrusion, and the fourth protrusion is a cylindrical protrusion.

As a preferable scheme of the crimping system, the two first covers of the fixing rod are connected by a thread structure, a buckle structure, a positioning pin structure, or a rivet structure, and the two second covers of the moving rod are connected by a thread structure, a buckle structure, a positioning pin structure, or a rivet structure.

The invention also provides a crimping method, which comprises a first stage crimping and a second stage crimping, wherein the first stage crimping comprises the following steps:

s1, soaking the squeezed sponge in normal saline for a first set time and then taking out the squeezed sponge;

s2, penetrating the valve before crimping into the crimping sponge;

s3, penetrating the pressing and holding lining core into a conveyer, and then integrally placing the valve and the pressing and holding sponge at the designated position of the conveyer;

s4, penetrating the valve, the squeezing sponge and the conveyor into a squeezing opening of a valve squeezing machine to prepare for squeezing;

s5, squeezing the valve through a valve squeezing machine, and integrally taking out the valve and the conveyor after squeezing;

the second stage crimping comprises:

s6, penetrating the valve and the conveyor which are crimped in the first stage into a crimping film;

s7, injecting physiological saline into the pressing film through one end of the pressing film;

s8, taking out the handheld crimping device, and penetrating the valve, the crimping film and the conveyor into a crimping port of the handheld crimping device to prepare for crimping;

s9, the valve is squeezed through the handheld squeezing device, the valve and the conveyor are integrally taken out after squeezing, and the squeezing lining core is taken out of the conveyor.

As a preferable mode of the squeezing method, in step S1, the first set time is 3 minutes.

As a preferable aspect of the crimping method, step S5 includes:

s51, rotating a handle cover of the valve press-holding machine, pressing and holding the valve, and when the handle cover moves to an upper end limiting piece, withdrawing the handle cover to a state before pressing and holding;

s52, integrally taking out the valve, the squeezing sponge and the conveyor, unloading the squeezing sponge, checking the position of the valve on the conveyor, re-penetrating the valve and the conveyor into a squeezing opening of the valve squeezing machine, unloading the upper end limiting piece and preparing for squeezing;

s53, rotating a handle cover of the valve press-holding machine, pressing and holding the valve, and when the handle cover moves to a lower end limiting piece, withdrawing the handle cover to a state before pressing and holding, and integrally taking out the valve and the conveyor.

As a preferable aspect of the crimping method, step S9 includes:

s91, rotating a moving rod of the handheld crimping device, crimping the valve, locking the valve by using a self-locking structure on the handheld crimping device, and integrally placing the handheld crimping device, the valve, the crimping film and the conveyor beside an operating table;

and S92, when the operation is started, releasing the handheld pressing device, detaching the handheld pressing device and the pressing film, extracting the pressing lining core from the conveyor, and conveying the valve and the conveyor to an operating table integrally.

As a preferable scheme of the crimping method, in step S8, two sets of the handheld crimping devices are taken out, and the valve, the crimping film and the conveyor are respectively inserted into crimping ports of the two sets of the handheld crimping devices, where the two sets of the handheld crimping devices are respectively located at two ends of the valve.

The invention has the beneficial effects that:

when the valve is crimped at the first stage, the valve penetrates into the crimping sponge soaked with normal saline, and the crimping sponge can ensure that the valve frame structure of the valve is not broken due to uneven stress when the valve frame structure of the valve is deformed in a large scale. When the valve is crimped in the second stage, the valve penetrates into the crimping film, and physiological saline is injected into the crimping film, so that the valve is always immersed in the physiological saline in the second stage crimping process, and the valve leaflet of the valve is protected from being affected by long-time drying. And when the second stage is pressed and is held, handheld pressure is held the device and can be through its auto-lock structure with valve and conveyer locking in the pressure of handheld pressure is held the device and is held the mouth in to the realization is pressed and is held the continuation of valve, thereby protects the valve after the first stage is pressed and is held and can not take place to kick-back because of standing for a long time, avoids the operation risk that brings because of the valve external diameter increase after the kick-back.

Drawings

FIG. 1 is a schematic view of the external structure of a valve grasper according to an embodiment of the present invention;

FIG. 2 is a schematic view of the internal structure of a valve grasper according to an embodiment of the present invention;

FIG. 3 is a schematic view of a handle cover of a valve press according to an embodiment of the present invention;

FIG. 4 is a schematic view of a stationary cover of a valve grasper according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of a support frame of a valve grasper according to an embodiment of the present invention;

FIG. 6 is a schematic view of a clamp of a valve grasper according to an embodiment of the present invention;

FIG. 7 is an assembled view of a stop of the valve grasper according to an embodiment of the present invention;

FIG. 8 is an exploded view of a stop of the valve grasper according to an embodiment of the present invention;

FIG. 9 is a front view of a hand-held crimping device according to an embodiment of the present invention;

FIG. 10 is a schematic view of the internal structure of a hand-held crimping device according to an embodiment of the present invention;

FIG. 11 is a schematic structural diagram of a fixing rod of the hand-held crimping device according to the embodiment of the invention;

FIG. 12 is a schematic view of the movable rod of the hand-held crimping device according to the embodiment of the invention;

FIG. 13 is a schematic diagram of a plurality of clamping blocks according to an embodiment of the present invention;

FIG. 14 is a schematic view of a first perspective structure of a clamping block according to an embodiment of the invention;

FIG. 15 is a schematic diagram of a second perspective view of a clamping block according to an embodiment of the invention;

FIG. 16 is an enlarged schematic view of a splice angle in a clamping block according to embodiments of the present invention;

FIG. 17 is a schematic view of a construction of a squeeze sponge according to an embodiment of the present invention;

FIG. 18 is a schematic view of a structure of a squeeze film according to an embodiment of the present invention;

FIG. 19 is a schematic view of a squeeze grip core according to an embodiment of the present invention;

FIG. 20 is a partial schematic view of a squeeze liner core according to an embodiment of the present invention assembled on a conveyor.

In the figure:

100. a valve press; 101. a press-grip opening of the valve press-grip machine; 200. a hand-held crimping device; 201. a pressing opening of the handheld pressing device; 300. pressing and holding the sponge; 400. pressing and holding the film; 500. pressing and holding the lining core; 600. a conveyor press-holding section;

110. a base; 111. a first buckle; 112. a tenth buckle;

120. a support frame; 121. a first communication port; 122. a second buckle; 123. a third buckle; 124. a sixth buckle;

130. a handle cover; 131. a second communication port; 132. a first arc-shaped slot; 133. a fifth buckle;

140. a fixed cover; 141. a third communication port; 142. a fourth buckle; 143. a sliding groove; 144. a sliding guide rail;

150. a clamping member; 151. a first protrusion; 152. a second protrusion; 153. a chute; 154. a concave structure; 155. reinforcing ribs;

160. a limiting member; 161. an upper end limiting member; 1611. a ninth buckle; 162. a lower end limiting part; 1621. a seventh buckle; 1622. an eighth buckle;

210. fixing the rod; 211. a first cover body; 212. a fourth communication port; 213. a second arc-shaped slot; 214. a fixing pin;

220. a travel bar; 221. a second cover body; 222. a fifth communication port; 223. a third arc-shaped slot; 224. a first straight groove; 225. a gear structure;

230. a clamping block; 231. a third protrusion; 232. a fourth protrusion; 233. a concave portion; 234. a first locking portion; 235. a second locking portion; 236. splicing the corners; 2361. a first straight side; 2362. a second straight side; 2363. a transition arc.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

Example one

As shown in fig. 1-20, the present embodiments provide a valve crimping system for mounting a valve on a transporter for a valve replacement procedure. The crimping system comprises a valve crimping machine 100, a handheld crimping device 200, a crimping sponge 300 and a crimping film 400, wherein the valve crimping machine 100 is used for carrying out first-stage crimping on a valve, and the handheld crimping device 200 is used for carrying out second-stage crimping on the valve. The press-holding sponge 300 is used in the first-stage press-holding, the press-holding sponge 300 is of a cylindrical structure, before the press-holding, the press-holding sponge 300 is soaked in normal saline for a certain time, then a valve is arranged in the press-holding sponge 300 in a penetrating mode, then the assembled valve and the press-holding sponge 300 are placed at the appointed position of a conveyor (namely the conveyor press-holding section 600 shown in fig. 20) together, and during the press-holding, the assembled valve, the press-holding sponge 300 and the conveyor are arranged in the press-holding opening 101 of the valve press-holding machine together, so that the valve is subjected to the first-stage press-holding through the valve press-holding machine 100. The press-holding film 400 is used in the second stage of press-holding, the press-holding film 400 is in a cylindrical structure, the valve after the first stage of press-holding is arranged in the press-holding film 400 in a penetrating manner, physiological saline is injected into the press-holding film 400, then the assembled valve and the press-holding film 400 are placed at the appointed position of the conveyor (namely, the conveyor press-holding section 600 shown in fig. 20), during press-holding, the assembled valve, the press-holding film 400 and the conveyor are arranged in the press-holding opening 201 of the hand-held press-holding device in a penetrating manner, and the assembled valve, the press-holding film 400 and the conveyor are locked in the press-holding opening 201 of the hand-held press-holding device through the self-locking structure of the hand-held press.

In the first stage of crimping, the valve is penetrated into the crimping sponge 300 soaked with normal saline, and the crimping sponge 300 can ensure that the valve frame structure of the valve is not broken due to uneven stress when the valve frame structure of the valve is deformed in a large scale. During the second stage of crimping, the valve is threaded into the crimping film 400 and saline is injected into the crimping film 400, so that the valve is always immersed in the saline during the second stage of crimping, thereby protecting the valve leaflets from affecting the performance of the valve due to long-term drying. And when the second stage is pressed and is held, handheld pressure is held device 200 can through its auto-lock structure with valve and conveyer locking in handheld pressure is held the pressure of device and is held mouthful 201 in to the realization is held the continuous pressure of valve, thereby protects the valve after the first stage is pressed and is held and can not take place to kick-back because of standing for a long time, avoids the operation risk that brings because of the increase of valve external diameter after the kick-back.

Preferably, the handheld crimping devices 200 of the present embodiment are provided with two sets, and in the second stage crimping, the two sets of handheld crimping devices 200 are crimped at two ends of the valve respectively, so as to further avoid springback after the valve is crimped, and improve the efficiency of the valve crimping.

In this embodiment, in the release state, the inner diameter of the press-holding sponge 300 is larger than the outer diameter of the valve before press-holding, and the outer diameter of the press-holding sponge 300 is smaller than the inner diameter of the press-holding opening 101 of the valve press-holding machine in the release state, so that the valve can be conveniently and smoothly loaded into the press-holding sponge 300, and the assembled valve, the press-holding sponge 300 and the conveyor can be conveniently loaded into the press-holding opening 101 of the valve press-holding machine together, thereby improving the operation efficiency. Similarly, in this embodiment, in the release state, the inner diameter of the squeeze film 400 is larger than the outer diameter of the valve after the first-stage squeezing, and the outer diameter of the squeeze film 400 is smaller than the inner diameter of the squeeze opening 201 of the handheld squeeze device in the release state, which facilitates the smooth loading of the valve after the first-stage squeezing into the squeeze film 400, and simultaneously facilitates the loading of the assembled valve, the squeeze film 400 and the conveyor into the squeeze opening 201 of the handheld squeeze device, thereby improving the operation efficiency.

Further, the crimping system of the present embodiment further includes a crimping liner core 500, the crimping liner core 500 is inserted into the conveyer before the first stage crimping and is withdrawn from the conveyer before the beginning of the formal operation after the second stage crimping, which is used to avoid damage to the valve and the conveyer, such as bending of the valve and the conveyer, caused by over-crimping or other misoperation.

The valve crimping machine 100 according to the present embodiment will be described below. The valve crimping machine 100 includes a base 110, a support frame 120, a handle cover 130, a fixing cover 140, a plurality of clamping members 150, and a stopper 160. Wherein the base 110 is located at the bottom of the valve press-and-grip machine 100 and is used for supporting the whole press-and-grip machine, and the upper end of the base 110 is provided with a first buckle 111 for being clamped and fixed with the support frame 120.

The support frame 120 comprises two support frame split bodies which are mutually butted, the upper part of each support frame split body is provided with a first circular communication port 121, and a third clamping buckle 123 is arranged at the first communication port 121 and used for being clamped and fixed with the fixing cover 140. The bottom of support frame components of a whole that can function independently is equipped with second buckle 122, and second buckle 122 cooperates with the first buckle 111 joint on the base 110 to make support frame 120 firmly be fixed in on the base 110. The middle part of the support frame split body is provided with a sixth buckle 124, and the two support frame split bodies are fixedly connected through the sixth buckle 124. Through the arrangement, the structure of the support frame 120 is simplified, and the screw connection is not needed, so that the size and the weight of the whole crimping machine are reduced.

The handle cover 130 includes two handle cover split bodies butted against each other, the handle cover split bodies have a circular cover body and a handle connected to the cover body, and a second communication port 131 is provided at the center of the cover body for the valve holder to pass therethrough. The two handle cover split bodies are provided with fifth buckles 133 along the circumferential wall of the cover body, and the two handle cover split bodies are fixedly connected through the fifth buckles 133. The embodiment reduces the size and the weight of the whole crimping machine due to no need of screw fixation, thereby being convenient for the crimping machine to carry, place and use. The handle cover 130 formed after the two handle covers are separately butted can rotate relative to the support frame 120, so that the valve can be crimped. In addition, the inner side of each handle cover split body of the handle cover 130 is also provided with four first arc-shaped grooves 132, and the length of a single first arc-shaped groove 132 is larger due to the fact that the number of the first arc-shaped grooves 132 is small, so that the pressing and holding stroke of the handle is increased, and the resistance of the handle in pressing and holding is reduced.

The fixing cover 140 includes two fixing cover sub-bodies that are butted against each other, and the two fixing cover sub-bodies are fixedly connected by a fastener, for example, if one of the fixing cover sub-bodies is provided with a screw post, and the other fixing cover sub-body is provided with a screw hole, the two fixing cover sub-bodies are fastened and connected by a screw. In this embodiment, the fixing cover 140 is integrally disposed in the handle cover 130, each fixing cover is divided into a circular structure, a third communicating opening 141 is disposed at the center of the fixing cover, a fourth fastening 142 is disposed at the third communicating opening 141, and the fourth fastening 142 is fastened to the third fastening 123 of the supporting frame 120, so that the fixing cover 140 is fixed to the supporting frame 120. The fixing cover 140 of the present embodiment is fixedly connected to the base 110 via the supporting frame 120, so as to ensure the firmness of the whole structure during the pressing process. Further, a plurality of sliding grooves 143 are uniformly distributed on the fixing cover 140 along the circumferential direction for sliding fit with the clamping member 150, and each sliding groove 143 extends outward along the radial direction of the fixing cover 140; meanwhile, a plurality of sliding rails 144 are uniformly arranged on the fixing cover 140 along the circumferential direction, and the sliding rails 144 are parallel to the sliding grooves 143 and used for guiding the movement of the clamping member 150.

The plurality of holders 150 are uniformly installed in the fixing cover 140 along a circumferential direction, and the holders 150 are provided with first protrusions 151 and second protrusions 152. Preferably, the first protrusion 151 is a square protrusion, the second protrusion 152 is a circular protrusion, and the second protrusion 152 is disposed on the first protrusion 151. The first projection 151 of the present embodiment is installed in the sliding groove 143 of the fixing cover 140 and can slide along the sliding groove 143, and this arrangement allows the holder 150 to move only in the radial direction without circumferential deviation during the crimping process. The second protrusion 152 is installed in the first arc-shaped groove 132 of the handle cover 130 and can slide along the first arc-shaped groove 132. Further, the clamping member 150 is further provided with a sliding slot 153, and the sliding slot 153 is slidably connected with the sliding rail 144 of the fixed cover 140 to ensure that the clamping member 150 has sufficient strength and does not circumferentially break during the pressing process. It should be noted that, in the present embodiment, the positions and sizes of the first protrusion 151 and the second protrusion 152 of the clamping member 150 can be finely adjusted according to the parameters of different products, so that the valve crimping machine 100 can meet the requirements of crimping sizes and crimping strengths of products with different specifications.

Preferably, twelve clamping members 150 are arranged in the fixing cover 140 of the embodiment, wherein the second protrusions 152 of every three clamping members 150 share one first arc-shaped groove 132, and the arrangement increases the number of the clamping members 150 in the crimping machine, so that the roundness of the crimping opening 101 of the valve crimping machine is ensured during the crimping process. Further, the tail end of the clamping member 150 is provided with a concave structure 154, and in the pressing and holding process, along with the reduction of the pressing and holding opening 101 of the valve pressing and holding machine, the pressing and holding force is increased, so that the concave structures 154 at the tail ends of the twelve clamping members 150 can be sequentially attached, the pressing and holding strength of the clamping member 150 is increased, and the clamping member 150 cannot be broken inwards due to the extrusion of the pressing and holding force. Preferably, the head end of the clamping member 150 is hollowed out and provided with a reinforcing rib 155, so that the overall weight of the clamping member 150 can be reduced and the strength of the clamping member 150 can be increased.

The limiting member 160 is disposed on the base 110 and located below the handle of the handle cover 130, and the limiting member 160 is matched with a slot at the lower end of the handle to limit the rotation position of the handle cover 130, so as to prevent the valve from being damaged due to over-pressure in the pressing process. The position limiter 160 is preferably connected to the base 110 by a snap-fit structure to simplify the structure and reduce the size and weight of the press-and-grip machine. Preferably, the position-limiting member 160 of the present embodiment includes an upper position-limiting member 161 and a lower position-limiting member 162, the lower position-limiting member 162 is disposed on the base 110, and the upper position-limiting member 161 is detachably connected to the lower position-limiting member 162. The top position of this embodiment upper end locating part 161 is the position of the pre-compaction of valve and holds the stage, and the top position of lower extreme locating part 162 is the final pressure of valve and holds the position, through above-mentioned structure, can carry out pre-pressure earlier to the valve and hold, carries out final pressure again and holds, guarantees the pressure of valve and holds the effect better, prevents to cause the harm to the valve. Specifically, the lower-end limiting member 162 is provided with a seventh buckle 1621 and an eighth buckle 1622, the upper-end limiting member 161 is provided with a ninth buckle 1611, and the base 110 is provided with a tenth buckle 112; the seventh latch 1621 and the tenth latch 112 cooperate to fix the lower-end limiting member 162 to the base 110, and the eighth latch 1622 and the ninth latch 1611 cooperate to fix the upper-end limiting member 161 and the lower-end limiting member 162 in a snap-fit manner. The buckle structure is designed, so that the structure of the pressing and holding machine is simplified, and the size and the weight are smaller.

Because the heights of the position-limiting members 160 of the crimping machines corresponding to different valves are different, for being suitable for different valves, preferably, the top lengths of the upper end position-limiting members 161 and the lower end position-limiting members 162 of the embodiment can be adjusted, so as to be beneficial to the crimping machines to be suitable for different valves, and therefore when the crimping machine is applied to different valves, the position-limiting members 160 do not need to be replaced, and only the height of the position-limiting members 160 needs to be adjusted. Furthermore, the limiting member 160 is further provided with a fool-proof structure to avoid errors in the installation of the limiting member 160, thereby improving the installation efficiency.

The installation and use method of the valve crimping machine 100 according to the embodiment is as follows:

firstly, twelve clamping pieces 150 are sequentially arranged in a fixing cover split body, wherein a first protrusion 151 of each clamping piece 150 is clamped in a sliding groove 143 of the fixing cover 140, a sliding groove 153 of each clamping piece 150 is clamped on a sliding guide rail 144 of the fixing cover 140, concave structures 154 of the twelve clamping pieces 150 are sequentially arranged along the circumferential direction, and the tail ends of the twelve clamping pieces 150 jointly form a pressing and holding opening 101 of the valve pressing and holding machine. During the crimping process, as the crimping opening 101 of the valve crimping machine is reduced, the female formations 154 on the trailing ends of the twelve clamps 150 can be sequentially abutted.

After the previous step is completed, another fixing cover split body is covered, and the fixing cover 140 and the clamping member 150 are integrally assembled into one handle cover split body, wherein the second protrusion 152 of the clamping member 150 is snapped into the first arc-shaped groove 132 of the handle cover 130.

After the previous step is completed, another handle cover is covered separately to form an integral handle cover 130; fixing the third buckle 123 of the two support frame split bodies with the fourth buckle 142 of the fixing cover 140; the sixth buckles 124 of the two support frame split bodies are fixed with each other; the second fasteners 122 of the two support frames are fixed to the base 110.

After the previous step is completed, the limiting member 160 is fixed on the base 110, and the assembly of the press-grip machine is completed.

In use, the valve is placed in the crimping opening 101 of the valve crimping machine, the handle cover 130 is rotated, and the clamping member 150 is moved under the cooperation of the first arc-shaped groove 132 in the handle cover 130 and the second protrusion 152 of the clamping member 150. Due to the restriction of the sliding groove 143 of the fixing cover 140, the clamp 150 is moved only in a specific direction, so that the crimping mouth 101 of the valve crimping machine is reduced. Because the fixing cover 140, the supporting frame 120 and the base 110 are connected by a snap, the whole structure of the press-and-hold machine is firm. When the handle cover 130 hits the upper end stopper 161, the handle cover 130 is released, the valve is taken out, and whether the valve-grasping position is accurate or not is checked. And after the fine adjustment of the press-holding position is finished, the valve is continuously placed into the press-holding opening 101 of the valve press-holding machine, the upper end limiting piece 161 is detached, the valve is continuously pressed, when the handle cover 130 touches the lower end limiting piece 162, the press-holding is finished, the handle cover 130 is released, and the valve is taken out.

The valve crimping machine 100 according to the embodiment of the invention is directly clamped through the clamping structure, has a simple structure, is convenient to install, has a firm integral structure, and does not need to be fixed by screws, so that the size and the weight of the whole crimping machine are reduced, the carrying, the placing and the use are convenient, and the problems that the valve crimping machine 100 in the prior art is connected by a large number of bolts and has large size and weight are solved.

The hand-held crimping device 200 according to the present embodiment will be explained below. The hand-held crimping device 200 includes a fixed bar 210, a movable bar 220, and a plurality of clamping blocks 230. The fixing rod 210 includes two first cover 211 fixedly fastened, the first cover 211 is a circular shell structure, and a first handle part is further extended from the first cover 211 for an operator to use; preferably, the two first covers 211 may be connected by a screw structure or a snap structure or a dowel structure or a rivet structure. The movable rod 220 is installed in the fixed rod 210 and can coaxially rotate relative to the fixed rod 210, the movable rod 220 comprises two fixedly buckled second cover bodies 221, the second cover bodies 221 are of circular shell structures, and second handle parts are further arranged on the second cover bodies in an extending mode so as to be convenient for operators to use; preferably, the two second covers 221 may be connected by a screw structure or a snap structure or a dowel structure or a rivet structure. A fourth communication port 212 is formed in the center of the first cover 211, a fifth communication port 222 is formed in the second cover 221, and the fifth communication port 222 communicates with the fourth communication port 212; the plurality of clamping blocks 230 are uniformly arranged in the moving rod 220 along the circumferential direction, the tail ends of the plurality of clamping blocks 230 can be spliced to form the pressing and holding port 201 of the handheld pressing and holding device, and the pressing and holding port 201 of the handheld pressing and holding device is communicated with the fourth communication port 212 and the fifth communication port 222, so that the valve can be inserted into the pressing and holding port 201 of the handheld pressing and holding device to be pressed and held.

Specifically, first lid 211 is equipped with a plurality of fixed pins 214 along circumference, and second lid 221 is equipped with a plurality of third arc wall 223 along circumference, and when dead lever 210 and carriage release lever 220 were installed, fixed pin 214 slided to peg graft in third arc wall 223, through the sliding fit of fixed pin 214 with third arc wall 223, realized the steady rotation of carriage release lever 220 relative dead lever 210, improved the holistic motion stationarity of device. Further, the first cover 211 is provided with a plurality of second arc-shaped grooves 213 along the circumferential direction, the second cover 221 is provided with a plurality of first straight grooves 224 along the circumferential direction, and the first straight grooves 224 extend along the radial direction of the moving rod 220. The both sides of grip block 230 all are equipped with third arch 231, are equipped with fourth arch 232 on the third arch 231, and third arch 231 slides and pegs graft in first straight slot 224, and fourth arch 232 slides and pegs graft in second arc-shaped groove 213 to carry on spacingly to the removal of grip block 230, make grip block 230 can follow the radial reciprocating motion of carriage release lever 220. The device is more compact in overall structure and more convenient and reliable to install. Further preferably, the third protrusion 231 on the clamping block 230 is a rectangular protrusion, and the rectangular protrusion is matched with the first straight groove 224, so that the clamping block 230 moves more stably and the moving direction is more accurate; the fourth protrusion 232 is a cylindrical protrusion, which can realize flexible and smooth movement of the fourth protrusion 232 in the second arc-shaped groove 213. It should be noted that, in the present embodiment, the positions and the sizes of the third protrusion 231 and the fourth protrusion 232 of the clamping block 230 can be finely adjusted according to parameters of different products, so that the handheld crimping device 200 can meet the requirements of crimping sizes and crimping strengths of products with different specifications. When the device is used, the fixed rod 210 is fixed, the movable rod 220 is rotated, the clamping block 230 is made to reciprocate along the radial direction of the movable rod 220 through the interaction of the first straight groove 224 on the movable rod 220 and the second arc-shaped groove 213 on the fixed rod 210, and the pressing opening 201 of the handheld pressing and holding device is enlarged or reduced according to the designated direction, so that the purpose of pressing and holding or releasing the valve is achieved.

Further, the clamping blocks 230 are further provided with a self-locking structure, and the plurality of clamping blocks 230 can be sequentially locked through the self-locking structure after being pressed and held in place. By providing the self-locking structure on the clamping block 230, the handheld crimping device 200 is locked at the final stage of crimping, increasing the valve crimping time and simplifying the operation of the handheld crimping device 200. In addition, the self-locking structure enables the clamping blocks 230 to be locked and tightly attached to each other, so that a large clamping force can be borne, and the clamping blocks 230 are tightly attached to avoid the phenomenon that the barb structures in the valve are clamped into gaps between the clamping blocks 230, so that the crimping device not only can be suitable for crimping valves with simple structures, but also can be suitable for crimping valves with barbs or complicated structures, and the universality of the device is improved.

Preferably, a plurality of gear structures 225 are arranged on the inner side of the moving rod 220, the gear structures 225 are arranged in one-to-one correspondence with the first straight grooves 224, each pair of corresponding gear structures 225 and the first straight grooves 224 are parallel to each other, and when the plurality of clamping blocks 230 are installed, the outer side of each clamping block 230 is respectively attached to the corresponding gear structure 225. Due to the arrangement, when the handheld crimping device 200 is used for crimping a valve, if a valve with a large crimping force is encountered, the gear structure 225 can increase the strength of the clamping block 230, so that the clamping block 230 is prevented from being broken outwards; meanwhile, the gear structure can also play a role in guiding the reciprocating motion of the clamping block 230.

In this embodiment, one side of each clamping block 230 is provided with a concave portion 233, and the other side of each clamping block 230 can be inserted into the concave portion 233 of the adjacent clamping block 230, so that in the process of pressing and holding, along with the reduction of the pressing and holding opening 201 of the handheld pressing and holding device and the increase of the pressing and holding force, the plurality of clamping blocks 230 are sequentially attached to each other through the concave portions 233, and the pressing and holding strength of the clamping blocks 230 is increased. By adopting the concave design, the plurality of clamping blocks 230 are buckled and attached to each other annularly through the concave part 233, and when the handheld pressing and holding device 200 presses and holds the valve, if the valve with larger pressing and holding force is encountered, the clamping blocks 230 can be effectively prevented from being broken inwards.

Further, the self-locking structure comprises a first locking portion 234 arranged on the inner side of the concave portion 233 and a second locking portion 235 arranged on the outer side of the concave portion 233, and two adjacent clamping blocks 230 can be locked by the cooperation of the first locking portion 234 and the second locking portion 235 in the pressing and holding process. Preferably, the first locking portion 234 is a slot, the second locking portion 235 is a buckle, when the pressing device is pressed and held in place, the buckle can be clamped in the slot, so that the clamping blocks 230 are fixed, and the clamping blocks 230 are prevented from moving, so that the pressing device can still continuously press and hold the valve after the hand is released, thereby saving labor and simplifying the operation process; after the pressing and holding is finished, the movable rod 220 can be rotated reversely by force, so that the buckle is separated from the clamping groove, and the clamping block 230 can be unlocked.

Further, the tail end of the clamping block 230 of this embodiment is further provided with a splicing corner 236, and during the pressing process, the splicing corners 236 of the plurality of clamping blocks 230 are spliced and matched to form an approximately circular pressing opening. Specifically, the splice corner 236 includes a first straight side 2361 and a second straight side 2362 which are arranged at an angle, and a transition circular arc 2363 connected between the first straight side 2361 and the second straight side 2362, wherein the first straight side 2361 is close to the end of the tail end of the clamping block 230, and when the handheld crimping device 200 is crimped to the minimum diameter, the splice corners 236 of the plurality of clamping blocks 230 make the crimping mouth 201 of the handheld crimping device form a regular polygon with rounded corners. Preferably, the number of the clamping blocks 230 is six, the angle between the first straight edge 2361 and the second straight edge 2362 is 150 degrees, when the handheld crimping device 200 is crimped to the minimum diameter, the splicing angles 236 of the six clamping blocks 230 enable the crimping opening 201 of the handheld crimping device to form a regular dodecagon with rounded corners, and at this time, the crimping opening 201 of the handheld crimping device can be approximately regarded as a circular state, so that the roundness of the crimped valve is effectively ensured. Through the arrangement of the splicing angle 236, the handheld crimping device 200 can meet the crimping form formed by the twelve clamping blocks 230 only by the six clamping blocks 230, so that the material is greatly saved, the design is simplified, and the production cost is reduced. Further preferably, the present embodiment can adjust the outer diameter of the final crimping opening by adjusting the length of the first straight edge 361 of each clamping member 3 and the fillet radius of the transition circular arc 363, so as to meet the crimping requirements of valves with different specifications. Illustratively, the length of the first straight edge 2361 of the clamping block 230 is 0.7mm (the length of the portion of the spliced second straight edge 2362 used for forming the crimping mouth 201 of the hand-held crimping device is also 0.7mm), and the radius of the circular transition arc 2363 is 2mm, so that the crimping mouth 201 of the hand-held crimping device is in a circle with a radius similar to 2mm when being crimped to the minimum caliber.

Preferably, the clamping blocks 230 are made of self-lubricating material, and the surface texture of the clamping blocks 230 is consistent with the moving direction of the clamping blocks 230 relative to the moving rod 220 and the relative moving direction between the adjacent clamping blocks 230. The above arrangement has the advantages that the resistance of the clamping blocks 230 during movement can be reduced, the clamping blocks 230 can be tightly attached to each other without a gap in the crimping process, and each clamping block 230 is tightly attached to the two second covers 221 of the movable rod 220 without a gap, so that the universality of the handheld crimping device 200 is further improved, and the handheld crimping device is not only suitable for valves with conventional structures, but also suitable for valves with barbs or other complex structures.

Example two

The embodiment provides a crimping method, which comprises a first stage crimping and a second stage crimping, wherein the first stage crimping is used for crimping a valve through a valve crimping machine 100, in order to prevent the valve from rebounding and deforming after the crimping, in the second stage crimping, the valve is continuously crimped through a handheld crimping device 200 until the operation starts, so that the operation efficiency is improved.

Specifically, the first-stage crimping includes:

and S1, soaking the pressing sponge 300 in normal saline for a first set time and then taking out. Preferably, the first set time is 3 minutes. In this embodiment, the squeezing sponge 300 is soaked in normal saline for 3 minutes before squeezing, and when squeezing in the first stage, the squeezing sponge 300 releases the internal water, thereby protecting the valve leaflets from tearing due to dryness and tensile force. Of course, in other embodiments, the first setting time may also be other values, and is not limited to this embodiment.

S2, penetrating the valve before being crimped into the crimping sponge 300. In this embodiment, in the released state, the inner diameter of the crimped sponge 300 is larger than the outer diameter of the valve before crimping, so that the valve can be conveniently loaded into the crimped sponge 300.

S3, the crimped liner core 500 is threaded into the delivery device, and the valve is placed with the crimped sponge 300 in its entirety at the desired location on the delivery device (i.e., the delivery device crimped section 600 shown in fig. 20).

S4, the valve, the clamping sponge 300 and the conveyor are integrally threaded into the clamping opening 101 of the valve clamping machine to prepare for clamping. In this embodiment, the outer diameter of the squeezing sponge 300 is smaller than the inner diameter of the squeezing opening 101 of the valve squeezing machine in the release state, so that the assembled valve, the squeezing sponge 300 and the conveyor can be conveniently installed into the squeezing opening 101 of the valve squeezing machine, and the operation efficiency is improved.

S5, the valve is squeezed by the valve squeezing machine 100, and the valve and the conveyor are taken out integrally after squeezing.

Specifically, step S5 includes:

s51, rotating the handle cover 130 of the valve press-gripping machine 100, pressing the valve, and when the handle cover 130 moves to the upper end stopper 161, retracting the handle cover 130 to the state before pressing;

s52, integrally taking out the valve, pressing the sponge 300 and the conveyor, unloading the pressing sponge 300, checking the position of the valve on the conveyor, then re-penetrating the valve and the conveyor into the pressing opening 101 of the valve pressing and gripping machine, unloading the upper end limiting piece 161 and preparing for pressing and gripping;

s53, rotating the handle cover 130 of the valve press-gripping machine 100, pressing the valve, and when the handle cover 130 moves to the lower end stopper 162, retracting the handle cover 130 to the state before pressing, and taking out the valve and the delivery device as a whole.

In this embodiment, the top position of the upper end limiting part 161 is the position of the pre-pressing holding stage of the valve, and the top position of the lower end limiting part 162 is the final pressing holding position of the valve in the first stage.

Specifically, the second-stage crimping includes:

s6, the valve and the transporter after the first-stage crimping are threaded into the crimping film 400. In this embodiment, in the released state, the inner diameter of the squeeze film 400 is larger than the outer diameter of the valve after the first-stage squeezing is completed, so that the valve can be smoothly loaded into the squeeze film 400.

S7, injecting physiological saline into the interior of the squeeze film 400 through one end of the squeeze film 400. In this embodiment, the valve is inserted into the squeeze film 400, and the normal saline is injected into the squeeze film 400, so that the valve is always immersed in the normal saline during the second stage of squeezing, thereby protecting the valve leaflets from being dried for a long time and affecting the performance of the valve leaflets.

S8, taking out the handheld crimping device 200, and inserting the valve, the crimping film 400 and the conveyor into the crimping opening 201 of the handheld crimping device to prepare for crimping. In this embodiment, the outer diameter of the press film 400 is smaller than the inner diameter of the press opening 201 of the hand-held press device in the release state, and this arrangement facilitates the assembly of the valve, the press film 400 and the conveyor into the press opening 201 of the hand-held press device, thereby improving the operation efficiency. Preferably, in this step, two sets of handheld crimping devices 200 are taken out, the valve, the crimping film 400 and the conveyor are respectively inserted into the crimping openings 201 of the two sets of handheld crimping devices, and the two sets of handheld crimping devices 200 are respectively located at two ends of the valve; the arrangement further avoids the rebound of the valve after the valve is pressed and held, and improves the efficiency of the valve pressing and holding.

S9, the valve is squeezed by the handheld squeezing device 200, the valve and the conveyor are integrally taken out after the squeezing, and the squeezing lining core 500 is taken out from the conveyor. Specifically, the step S9 includes:

s91, rotating the moving rod 220 of the handheld crimping device 200 to crimp the valve, locking the valve by using a self-locking structure on the handheld crimping device 200, and integrally placing the handheld crimping device 200, the valve, the crimping film 400 and the conveyor beside the operating table;

s92, when the operation is started, the hand-held crimping device 200 is released, the hand-held crimping device 200 and the crimping film 400 are detached, the crimping liner 500 is pulled out from the conveyor, and the valve and the conveyor are conveyed to the operating table as a whole.

This embodiment is earlier with valve press and hold machine 100 with the valve press on the conveyer, because the structural feature of conveyer and valve, the valve is pressed and is held and to have the resilience after good, consequently this embodiment further uses handheld pressure to hold device 200 and revises to continuously press and hold, until the operation begins, thereby effectively guaranteed the pressure of valve and held the effect, avoid the valve to kick back the back because of the operation risk that the external diameter increase brought.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A squeeze system, comprising a valve squeeze (100), a hand-held squeeze device (200), a squeeze sponge (300) and a squeeze film (400), wherein the valve squeeze (100) is used for performing a first-stage squeeze of a valve, and the hand-held squeeze device (200) is used for performing a second-stage squeeze of the valve; the pressing sponge (300) is used in the first-stage pressing, the pressing sponge (300) is of a cylindrical structure, the valve is arranged in the pressing sponge (300) in a penetrating mode, the assembled valve and the pressing sponge (300) are placed at the appointed position of a conveyor together, and the assembled valve, the pressing sponge (300) and the conveyor penetrate into a pressing opening (101) of a valve pressing machine together during pressing; the squeezing film (400) is used in the second-stage squeezing, the squeezing film (400) is of a cylindrical structure, the valve after the first-stage squeezing is finished penetrates through the squeezing film (400), the assembled valve and the squeezing film (400) are placed at the appointed position of the conveyor together, and during the squeezing, the assembled valve, the squeezing film (400) and the conveyor penetrate into a squeezing opening (201) of the handheld squeezing device together and are locked in the squeezing opening (201) of the handheld squeezing device through a self-locking structure of the handheld squeezing device (200) after the squeezing is in place.

2. The crimping system according to claim 1, wherein the two sets of the hand-held crimping devices (200) are provided, and in the second stage crimping, the two sets of the hand-held crimping devices (200) are crimped at two ends of the valve respectively.

3. The crimping system according to claim 1, wherein in a released state, the inner diameter of the crimping sponge (300) is larger than the outer diameter of the valve before crimping, and the outer diameter of the crimping sponge (300) is smaller than the inner diameter of the crimping opening (101) of the valve crimping machine in the released state;

in a release state, the inner diameter of the pressing and holding film (400) is larger than the outer diameter of the valve after the first-stage pressing and holding is finished, and the outer diameter of the pressing and holding film (400) is smaller than the inner diameter of a pressing and holding opening (201) of the handheld pressing and holding device in the release state.

4. The crimping system according to claim 1, further comprising a crimping core-insert (500), the crimping core-insert (500) being adapted to be threaded into the conveyor before the first stage crimping and to be withdrawn from the conveyor after the second stage crimping is finished and before the beginning of the official operation.

5. The crimping system of claim 1, wherein the valve crimping machine (100) comprises:

the base (110), wherein a first buckle (111) is arranged on the base (110);

the supporting frame (120) is provided with a first communication port (121), the supporting frame (120) is further provided with a second buckle (122) and a third buckle (123), and the second buckle (122) is matched with the first buckle (111) to enable the supporting frame (120) to be fixed on the base (110);

the handle cover (130) is provided with a second communication port (131), the second communication port (131) is communicated with the first communication port (121), the handle cover (130) is rotatably arranged on the support frame (120), and a plurality of first arc-shaped grooves (132) are formed in the inner side of the handle cover (130);

the fixed cover (140) is provided with a third communication port (141), the third communication port (141) is communicated with the second communication port (131) and the first communication port (121), the fixed cover (140) is arranged in the handle cover (130), the fixed cover (140) is provided with a fourth buckle (142), the fourth buckle (142) is matched with the third buckle (123) to fix the fixed cover (140) and the support frame (120), and the fixed cover (140) is provided with a sliding groove (143);

the clamping pieces (150) are uniformly arranged in the fixed cover (140) along the circumferential direction, first protrusions (151) and second protrusions (152) are arranged on the clamping pieces (150), the first protrusions (151) are connected with the sliding grooves (143) in a sliding mode, and the second protrusions (152) are connected with the first arc-shaped grooves (132) in a sliding mode;

the limiting piece (160) is arranged on the base (110) and located below the handle of the handle cover (130), and the limiting piece (160) is used for limiting the rotating position of the handle cover (130).

6. The squeezing system according to claim 5, wherein the handle cover (130) comprises two handle cover split bodies which are butted with each other, the handle cover split bodies are provided with fifth buckles (133) along the circumferential wall, and the two handle cover split bodies are fixedly connected through the fifth buckles (133).

7. The squeezing system according to claim 5, wherein the support frame (120) comprises two support frame split bodies butted with each other, the support frame split bodies are provided with sixth buckles (124), and the two support frame split bodies are fixedly connected through the sixth buckles (124).

8. The crimping system according to claim 5, wherein the fixing cover (140) comprises two fixing cover sub-bodies butted against each other, and the two fixing cover sub-bodies are fixedly connected with each other through a fastener.

9. The squeezing system according to claim 5, wherein the stopper (160) comprises an upper stopper (161) and a lower stopper (162), the lower stopper (162) is disposed on the base (110), and the upper stopper (161) is detachably connected to the lower stopper (162).

10. The squeezing system according to claim 9, wherein the lower end limiter (162) is provided with a seventh catch (1621) and an eighth catch (1622), the upper end limiter (161) is provided with a ninth catch (1611), and the base (110) is provided with a tenth catch (112); the seventh buckle (1621) and the tenth buckle (112) cooperate to fix the lower end limiting member (162) to the base (110), and the eighth buckle (1622) and the ninth buckle (1611) cooperate to fix the upper end limiting member (161) and the lower end limiting member (162).

11. The crimping system according to claim 5, wherein a sliding guide rail (144) is further provided on the fixing cover (140), a sliding groove (153) is provided on the clamping member (150), and the sliding groove (153) is slidably connected with the sliding guide rail (144).

12. The squeeze grip system according to claim 6, wherein each of the handle cover split bodies of the handle cover (130) is provided with four of the first arc-shaped grooves (132), and the fixing cover (140) is provided with twelve of the clamping members (150), wherein the second protrusions (152) of each three of the clamping members (150) share one of the first arc-shaped grooves (132).

13. The crimping system according to claim 5, wherein the clip members (150) are provided at the rear ends thereof with female structures (154), and the female structures (154) of the plurality of clip members (150) are arranged in a circumferential sequence, and each of the female structures (154) can be sequentially abutted during crimping.

14. Crimping system according to claim 5, characterized in that the head end of the clamping member (150) is internally hollowed out and provided with a reinforcement rib (155).

15. The crimping system according to claim 1, wherein the hand-held crimping device (200) comprises:

the fixing rod (210) comprises two first cover bodies (211) which are fixedly buckled, a fourth communication port (212) is formed in the center of each first cover body (211), and a plurality of second arc-shaped grooves (213) and a plurality of fixing pins (214) are formed in the first cover bodies (211) along the circumferential direction;

the movable rod (220) is installed in the fixed rod (210) and can coaxially rotate relative to the fixed rod (210), the movable rod (220) comprises two second cover bodies (221) which are fixedly buckled, a fifth communication port (222) is formed in each second cover body (221), the fifth communication port (222) is communicated with the fourth communication port (212), a plurality of third arc-shaped grooves (223) and a plurality of first straight grooves (224) are formed in the second cover bodies (221) along the circumferential direction, the first straight grooves (224) extend along the radial direction of the movable rod (220), and the fixed pins (214) are inserted into the third arc-shaped grooves (223) in a sliding mode;

the clamping blocks (230) are uniformly arranged in the moving rod (220) along the circumferential direction, third protrusions (231) are arranged on two sides of each clamping block (230), fourth protrusions (232) are arranged on the third protrusions (231), the third protrusions (231) are inserted into the first straight grooves (224) in a sliding mode, the fourth protrusions (232) are inserted into the second arc-shaped grooves (213) in a sliding mode, and when the moving rod (220) rotates relative to the fixed rod (210), the clamping blocks (230) move in a reciprocating mode along the radial direction of the moving rod (220) to increase or reduce the press-holding opening (201) of the hand-held press-holding device; the self-locking structure is arranged on the clamping blocks (230), and the clamping blocks (230) can be sequentially locked through the self-locking structure after being pressed and held in place.

16. The squeezing system according to claim 15, wherein the moving rod (220) has a plurality of gear structures (225) on the inner side, the gear structures (225) are disposed in a one-to-one correspondence with the first straight grooves (224), each pair of the corresponding gear structures (225) and the first straight grooves (224) are parallel to each other, and the plurality of clamping blocks (230) are mounted with the outer sides thereof abutting against the corresponding gear structures (225).

17. The crimping system according to claim 15, wherein the clamping blocks (230) are provided with recesses (233), and a plurality of the clamping blocks (230) can be sequentially attached via the recesses (233) during crimping.

18. The crimping system according to claim 17, wherein the self-locking structure comprises a first locking portion (234) disposed inside the concave portion (233) and a second locking portion (235) disposed outside the concave portion (233), and two adjacent clamping blocks (230) can be locked by cooperation of the first locking portion (234) and the second locking portion (235) during crimping.

19. The crimping system according to claim 15, wherein the tail end of the clamping block (230) is provided with a splicing corner (236), the splicing corner (236) comprises a first straight edge (2361) and a second straight edge (2362) which are arranged in an angle, and a transition circular arc (2363) connected between the first straight edge (2361) and the second straight edge (2362), wherein the first straight edge (2361) is close to the tail end of the clamping block (230), and when the handheld crimping device (200) is crimped to the minimum diameter, the splicing corner (236) of the plurality of clamping blocks (230) enables the crimping mouth (201) of the handheld crimping device to form a regular polygon with rounded corners.

20. The crimping system according to claim 19, wherein the number of the clamping blocks (230) is six, the angle between the first straight edge (2361) and the second straight edge (2362) is 150 degrees, and the joint angles (236) of the six clamping blocks (230) enable the crimping mouth (201) of the hand-held crimping device to form a regular dodecagon with rounded corners when the hand-held crimping device (200) is crimped to the minimum diameter.

21. The crimping system according to claim 15, wherein the clamping blocks (230) are made of a self-lubricating material, and the surface texture of the clamping blocks (230) is consistent with the moving direction of the clamping blocks (230) relative to the moving rod (220) and the relative moving direction between the adjacent clamping blocks (230).

22. The squeeze grip system according to any one of claims 15 to 21, wherein the third protrusion (231) on the grip block (230) is a rectangular protrusion and the fourth protrusion (232) is a cylindrical protrusion.

23. The squeezing system according to any one of claims 15-21, wherein the two first covers (211) of the fixing lever (210) are connected by a screw structure or a snap structure or a dowel structure or a rivet structure, and the two second covers (221) of the moving lever (220) are connected by a screw structure or a snap structure or a dowel structure or a rivet structure.

24. A method of crimping comprising a first stage crimping and a second stage crimping, the first stage crimping comprising:

s1, soaking the pressing sponge (300) in normal saline for a first set time and then taking out;

s2, penetrating the valve before crimping into the crimping sponge (300);

s3, penetrating the press-holding lining core (500) into a conveyer, and then integrally placing the valve and the press-holding sponge (300) at a designated position of the conveyer;

s4, the valve, the squeezing sponge (300) and the conveyor are integrally penetrated into a squeezing opening (101) of a valve squeezing machine to prepare for squeezing;

s5, squeezing the valve through a valve squeezing machine (100), and integrally taking out the valve and the conveyor after squeezing;

the second stage crimping comprises:

s6, penetrating the valve and the conveyor after the first-stage crimping into a crimping film (400);

s7, injecting physiological saline into the pressing and holding film (400) through one end of the pressing and holding film;

s8, taking out the handheld crimping device (200), and penetrating the valve, the crimping film (400) and the conveyor into a crimping opening (201) of the handheld crimping device to prepare for crimping;

s9, the valve is squeezed through the handheld squeezing device (200), the valve and the conveyor are integrally taken out after squeezing, and the squeezing lining core (500) is taken out of the conveyor.

25. The crimping method according to claim 24, wherein in step S1, the first set time is 3 minutes.

26. The crimping method according to claim 24, wherein the step S5 includes:

s51, rotating a handle cover (130) of the valve gripping press (100), gripping the valve, and retracting the handle cover (130) to a state before gripping when the handle cover (130) moves to an upper end limiting piece (161);

s52, integrally taking out the valve, the clamping sponge (300) and the conveyer, detaching the clamping sponge (300), checking the position of the valve on the conveyer, re-threading the valve and the conveyer into a clamping opening (101) of the valve clamping machine, detaching the upper end limiting piece (161) and preparing for clamping;

s53, rotating the handle cover (130) of the valve press-holding machine (100), pressing and holding the valve, when the handle cover (130) moves to the lower end limiting piece (162), retracting the handle cover (130) to the state before pressing and holding, and taking out the valve and the conveyor integrally.

27. The crimping method according to claim 24, wherein the step S9 includes:

s91, rotating a moving rod (220) of the handheld crimping device (200), crimping the valve, locking the valve by using a self-locking structure on the handheld crimping device (200), and integrally placing the handheld crimping device (200), the valve, the crimping film (400) and the conveyor beside an operating table;

s92, when the operation is started, the hand-held pressing device (200) is released, the hand-held pressing device (200) and the pressing film (400) are detached, the pressing lining core (500) is drawn out from the conveyor, and the valve and the conveyor are integrally conveyed to an operating table.

28. The crimping method according to claim 27, wherein in step S8, two sets of the hand-held crimping devices (200) are taken out, and the valve, the crimping film (400) and the conveyor are respectively threaded into crimping ports (201) of the two sets of the hand-held crimping devices, wherein the two sets of the hand-held crimping devices (200) are respectively positioned at two ends of the valve.