CN210541580U - Implanting tool needle feeding and withdrawing mechanism and implanting tool - Google Patents

Abstract

The utility model discloses implant instrument send needle and withdraw of needle mechanism compares with prior art, includes: a support body; the ejection base is arranged in the support main body; the ejection base has a contact state connected with the support body and a separation state separated from the support body; the ejection spring is arranged between the support main body and the ejection base and used for pushing the ejection base downwards; the ejection main body is arranged on the ejection base and can be used for installing the sensing implantation needle; and a needle withdrawing structure for receiving the skin penetrating sensing implantation needle into the support body. The application provides an implant instrument and send needle and withdraw of needle mechanism compares in prior art, and it can avoid the too big or the painful sense that the undersize of exerting oneself that the human factor leads to and bring, and can realize that the sensing implants the automatic of needle back of penetrating into the body and withdraws, is showing to alleviate the uncomfortable sense of user in the sensing implantation needle implantation process. The application also relates to an implantation tool, also having the above-mentioned beneficial effects.

Description

Implanting tool needle feeding and withdrawing mechanism and implanting tool

Technical Field

The application relates to the technical field of medical instruments, more specifically says, especially relates to an implantation instrument send needle and move back needle mechanism, and this application still relates to an implantation instrument.

Background

With the improvement of living standard of people, people pay more attention to the health condition, and pay attention to health preservation and detection of various parameters of the body. For example, it is necessary to periodically measure the glycemic index and to pay attention to the amount of sugar in blood. We generally focus on the physical condition from the side by regular glycemic index monitoring, monitoring the physical health index, etc.

At present, current blood sugar test mode mainly has two kinds, one kind is for pricking finger collection fingertip blood, uses the blood sugar examination strip and the blood glucose meter cooperation of test usefulness, can gather discrete blood sugar value, and another kind is dynamic blood sugar monitoring system CGM, through implanting blood glucose sensor in the skin, enzyme on the sensor and subcutaneous tissue liquid reaction detection blood sugar value to cooperate the transmitter with blood sugar value transmission to the terminal, can gather continuous blood sugar value. For the CGM, an implantation tool for implanting a sensor for blood glucose testing is one of the indispensable devices, and the implantation tool in the prior art often has discomfort to a user due to too much or too little force applied by human factors during use.

Therefore, it is an urgent technical problem for those skilled in the art to provide a needle feeding and withdrawing mechanism for an implantation tool, which can avoid the pain caused by too much or too little force due to human factors, reduce the discomfort of the user, and realize the automatic withdrawal of the implanted needle after the implantation needle is inserted into the body.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the application provides an implantation tool needle feeding and withdrawing mechanism which can avoid pain caused by too large or too small force applied due to human factors, reduce discomfort of a user and realize automatic needle withdrawing and withdrawing after a sensing implantation needle is inserted into a body. The application also relates to an implantation tool, also having the above-mentioned beneficial effects.

The technical scheme provided by the application is as follows:

the application provides an implant instrument send needle and move back needle mechanism includes: a support body; the ejection base is arranged in the support main body; the ejection base has a contact state connected with the support body and a separation state separated from the support body; the ejection spring is arranged between the support main body and the ejection base and used for pushing the ejection base downwards; the ejection main body is arranged on the ejection base and can be used for installing the sensing implantation needle; and a needle withdrawing structure for receiving the skin penetrating sensing implantation needle into the support body.

Further, in a preferred aspect of the present invention, the needle withdrawing structure includes: the needle withdrawing spring is arranged on the ejection base; the needle head seat is arranged at the top of the needle withdrawing spring; the needle body fixing seat is connected with the needle head seat and used for fixing the sensing implantation needle; the first constraint arm is arranged in the support main body; the second constraint arm is arranged on the ejection base and has a contraction state constrained inside the first constraint arm and a disengagement state disengaged from the constraint of the first constraint arm; the second constraint arm is provided with a limiting and limiting bump for pressing the needle head seat downwards, and the limiting bump is used for pressing and limiting the needle head seat downwards when the second constraint arm is in a contraction state.

Further, in a preferred embodiment of the present invention, the upper end of the second restraint arm is close to one side of the inner wall of the support body and is disposed at the support contact.

Further, in a preferred embodiment of the present invention, the needle seat upper end is provided with a first inclined plane end all around, and the lower end of the limiting projection is provided with a second inclined plane end matched with the first inclined plane end.

Further, in a preferred mode of the present invention, an elastic hook arm is provided inside the support body; the ejection base is provided with a positioning structure matched with the elastic hook arm; the positioning structure has a positioning state arranged on the elastic hook arm and a separation state separated from the elastic hook arm.

Further, in a preferred mode of the present invention, the elastic hook arm includes: a hook arm body; the trigger lug is arranged on the hook arm main body and matched with the trigger part; the limiting hook body is arranged on the hook arm main body and positioned at the lower part of the trigger bump, and the limiting hook body is used for limiting and positioning the structure.

Further, in a preferred embodiment of the present invention, the support body is further provided with a triggering portion, and the triggering portion is used for triggering the elastic hook arm to move outward so that the positioning structure is in a disengaged state.

Further, in a preferred aspect of the present invention, the trigger unit includes: the launching key is arranged on the upper part of the supporting main body and is used for pressing the elastic hook arm downwards and pushing the elastic hook arm to move outwards; a key compression spring located between the support body and the launch key; the middle part of the launching key is provided with a key positioning hook which is abutted against the inner wall of the upper end of the supporting main body.

Further, in a preferred mode of the present invention, the launch button is further provided with an anti-trigger cover.

The present application further provides an implantation tool, comprising: the needle feeding and withdrawing mechanism of the implantation tool is described above.

The utility model provides a pair of implant instrument send needle and move back needle mechanism, compare with prior art, include: the ejection base is provided with a contact state connected with the support body and a separation state separated from the support body; the ejection spring is arranged between the support main body and the ejection base and used for pushing the ejection base downwards, the ejection base is provided with the ejection main body, the ejection main body can be provided with a sensing implantation needle, and the ejection device further comprises a needle withdrawing structure and is used for taking in the sensing implantation needle penetrating into the skin into the support main body. In the implantation tool needle feeding and withdrawing mechanism related to the application, the implantation needle pushing and ejecting is sensed through the elastic force of the ejection spring, the operation is stable, the pushing and ejecting force is constant, the use discomfort brought to a user due to too large or too small force caused by artificial factors is avoided, meanwhile, the termination of the sensing implantation needle entering the human skin due to pain in the process of leading the sensing implantation needle to enter the human skin due to the artificial factors is avoided, compared with the prior art, the sensing implantation needle withdrawing mechanism can avoid the pain caused by too large or too small force caused by the artificial factors, the automatic withdrawing of the sensing implantation needle after being inserted into the human body can be realized, and the discomfort of the user in the sensing implantation needle implantation process is remarkably relieved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of an implantation tool with a needle feeding and withdrawing mechanism according to an embodiment of the present invention applied to the implantation tool;

fig. 2 is a schematic view of a needle withdrawing structure provided in the embodiment of the present invention;

fig. 3 is a schematic view of a triggering portion provided in an embodiment of the present invention;

fig. 4 is a schematic diagram of a signal transmitter according to an embodiment of the present invention;

fig. 5 is a schematic view of an implantation tool according to an embodiment of the present invention in a needle feeding state;

fig. 6 is a schematic view of an implantation tool according to an embodiment of the present invention in a needle withdrawing state;

fig. 7 is a schematic diagram of the components of an implantation tool according to an embodiment of the present invention;

fig. 8 is an exploded view of an implantation tool according to an embodiment of the present invention;

FIG. 9 is a schematic view of a sterilization case according to an embodiment of the present invention;

FIG. 10 is a schematic view of an implantation tool according to an embodiment of the present invention placed in a sterile storage case;

fig. 11 is a schematic overall perspective view of an implantation tool according to an embodiment of the present invention.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, the meaning of a plurality of or a plurality of is two or more unless specifically limited otherwise.

It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the practical limit conditions of the present application, so that the modifications of the structures, the changes of the ratio relationships, or the adjustment of the sizes, do not have the technical essence, and the modifications, the changes of the ratio relationships, or the adjustment of the sizes, are all within the scope of the technical contents disclosed in the present application without affecting the efficacy and the achievable purpose of the present application.

As shown in fig. 1 to 11, an implantation tool needle feeding and withdrawing mechanism provided in the embodiment of the present application includes: a support body 1; the ejection base 2 is arranged in the support main body 1; the ejection base 2 has a contact state connected with the support body 1 and a separation state separated from the support body 1; the ejection spring 3 is arranged between the support body 1 and the ejection base 2, and the ejection spring 3 is used for pushing the ejection base 2 downwards; the ejection body 5 is arranged on the ejection base 2 and can be used for installing a sensing implantation needle 6; a needle withdrawing structure for receiving the skin-piercing sensing implant needle 6 in the support body 1.

An embodiment of the utility model provides an implant instrument and send needle and move back needle mechanism, compare with prior art, include: the ejection device comprises a support body 1, wherein an ejection base 2 is arranged in the support body 1, and the ejection base 2 has a contact state connected with the support body 1 and a separation state separated from the support body 1; the catapult needle device comprises a support body 1, a catapult base 2, a catapult spring 3, a catapult needle withdrawing structure and a catapult body 5, wherein the catapult spring 3 is arranged between the support body 1 and the catapult base 2, the catapult spring 3 is used for downwards pushing the catapult base 2, the catapult base 2 is provided with the catapult body 5, and a sensing implant needle 6 can be installed on the catapult body 5. In the implantation tool needle feeding and withdrawing mechanism related to the application, the elastic force of the ejection spring 3 is used for sensing the pushing of the implantation needle 6, the operation is stable, the pushing force is constant, the use discomfort brought to a user due to too large or too small force caused by artificial factors is avoided, meanwhile, the termination due to pain in the process that the sensing implantation needle 6 enters the skin of the human body due to the artificial factors is avoided, compared with the prior art, the pain feeling brought by too large or too small force caused by the artificial factors can be avoided, the automatic retraction after the sensing implantation needle 6 is inserted into the body can be realized, and the discomfort of the user in the implantation process of the sensing implantation needle 6 is obviously reduced.

Specifically, in the embodiment of the present invention, the needle withdrawing structure 9 includes: a needle withdrawing spring 901 arranged on the ejection base 2; a needle seat 902 arranged on the top of the needle withdrawing spring 901; a needle body fixing seat 903 connected with the needle head seat 902 and used for fixing the sensing implantation needle 6; a first constraint arm 904 provided inside the support body 1; a second restraint arm 905 arranged on the ejection base 2, wherein the second restraint arm 905 has a contracted state restrained inside the first restraint arm 904 and a disengaged state disengaged from the restraint of the first restraint arm 904; the second constraint arm 905 is provided with a limit bump 906 for pressing down the needle head seat 902, and the second constraint arm 905 is in a contraction state, and the limit bump 906 presses down the limit needle head seat 902.

Specifically, in the embodiment of the present invention, the upper end of the second restraint arm is close to the inner wall of the support body 1 and is disposed at the support contact 907.

Specifically, in the embodiment of the present invention, the upper end of needle seat 902 is provided with a first inclined plane end, and the lower end of the limiting projection is provided with a second inclined plane end cooperating with the first inclined plane end.

Specifically, in the embodiment of the present invention, the supporting body 1 is provided with an elastic hook arm 101 inside; the ejection base 2 is provided with a positioning structure 201 matched with the elastic hook arm 101; the positioning structure 201 has a positioning state placed on the elastic hook arm 101 and a disengaged state disengaged from the elastic hook arm 101.

Specifically, in the embodiment of the present invention, the elastic hook arm 101 includes: a hook arm main body 102; a trigger protrusion 103 disposed on the hook arm main body 102 and engaged with the trigger part 4; the limiting hook body 104 is arranged on the hook arm main body 102 and positioned at the lower part of the trigger bump 103, and the limiting hook body 104 is used for limiting the positioning structure 201.

Specifically, in the embodiment of the present invention, the supporting body 1 is further provided with a triggering portion 4, and the triggering portion 4 is used for triggering the elastic hook arm 101 to move outward so that the positioning structure 20 is in the disengaged state.

Specifically, in the embodiment of the present invention, the trigger unit 4 includes: a launch button 401 provided on the upper portion of the support body 1 for pressing the elastic hook arm 101 downward and pushing the elastic hook arm 101 to move outward; a key compression spring 402 between the support body 1 and the launch key 401; the middle part of the launching key 401 is provided with a key positioning hook 403, and the key positioning hook 403 is abutted against the inner wall of the upper end of the supporting main body 1.

Specifically, in the embodiment of the present invention, the launch button is further provided with an anti-trigger cover 7.

Furthermore, the embodiment of the utility model provides a still provide an implantation instrument, include as above implantation instrument send the needle and move back needle mechanism, have above-mentioned beneficial effect equally.

More specifically, the implantation tool to which the push pin structure of the blood glucose meter according to the present embodiment is applied is specifically as follows:

the implantation tool comprises: the ejection device comprises a support body 1, wherein an ejection base 2 is arranged in the support body 1, and the ejection base 2 has a positioning state of contacting with the support body 1 and a separation state of separating from the support body 1; an ejection spring 3 is arranged between the supporting body 1 and the ejection base 2, the ejection spring 3 is used for pushing the ejection base 2 downwards, an ejection body 5 is arranged on the ejection base 2, and a sensing implantation needle 6 is arranged on the ejection body 5 and used for carrying a sensor 10 and sending the sensor 10 into the skin of a human body; furthermore, a triggering part 4 is involved for triggering the support body 1 to disengage the ejection base 2 from the support body 1; and a signal transmitter 8 for transmitting data sensed by the sensor 10 to the terminal. In the implantation tool related to this application, will touch and launch base 2 and break away from in supporting main part 1 when trigger part 4 is pressed down the line, launch base 2 and slide down under the spring action power to drive and launch main part 5 and slide down, thereby drive sensing implantation needle 6 gliding and pierce human skin, adopt the elasticity of launching spring 3 to carry out the propelling movement, the operation is steady, the dynamics of propelling movement is invariable, the painful discomfort that the too big or undersize of exerting oneself that someone leads to as the factor brings, trigger part 4 one key triggers can not terminate because of being afraid of the pain at the in-process of implanting because of the human factor. Compared with the prior art, the sensor implantation needle can avoid pain and discomfort caused by too much or too little force due to human factors, and remarkably reduces discomfort of a user in the implantation process of the sensor implantation needle 6.

Wherein the implantation tool further comprises: a needle withdrawing structure 9 for receiving the skin penetrating sensing implant needle 6 in the support body 1.

Wherein, withdraw of needle structure 9 includes: a needle withdrawing spring 901 arranged on the ejection base 2; a needle seat 902 arranged on the top of the needle withdrawing spring 901; a needle body fixing seat 903 connected with the needle head seat 902 and used for fixing the sensing implantation needle 6; a first constraint arm 904 provided inside the support body 1; a second restraint arm 905 arranged on the ejection base 2, wherein the second restraint arm 905 has a contracted state restrained inside the first restraint arm 904 and a disengaged state disengaged from the restraint of the first restraint arm 904; the second constraint arm 905 is provided with a limit bump 906 for pressing down the needle head seat 902, and the second constraint arm 905 is in a contraction state, and the limit bump 906 presses down the limit needle head seat 902.

Wherein, a supporting contact 907 is arranged at one side of the upper end of the second constraint arm 905 close to the first constraint arm 904.

Wherein, the upper part of needle seat 902 is provided with a matching contact surface 908 which is matched with the limit bump 906.

Wherein, the periphery of the upper end of the needle seat 902 is provided with a first inclined plane end, and the lower end of the limit bump 906 is provided with a second inclined plane end matched with the first inclined plane end.

Wherein, an elastic hook arm 101 is arranged inside the supporting body 1; the ejection base 2 is provided with a positioning structure 201 matched with the elastic hook arm 101; the positioning structure 201 has a positioning state placed on the elastic hook arm 101 and a disengaged state disengaged from the elastic hook arm 101.

Wherein the elastic hook arm 101 comprises: a hook arm main body 102; a trigger protrusion 103 disposed on the hook arm main body 102 and engaged with the trigger part 4; the limiting hook body 104 is arranged on the hook arm main body 102 and positioned at the lower part of the trigger bump 103, and the limiting hook body 104 is used for limiting the positioning structure 201.

The supporting body 1 is further provided with a triggering portion 4, and the triggering portion 4 is used for triggering the elastic hook arm 101 to move outwards so that the positioning structure 201 is in a disengaged state.

Wherein, trigger part 4 includes: a launch button 401 provided on the upper portion of the support body 1 for pressing the elastic hook arm 101 downward and pushing the elastic hook arm 101 to move outward; a key compression spring 402 between the support body 1 and the launch key 401; the middle part of the launching key 401 is provided with a key positioning hook 403, and the key positioning hook 403 is abutted against the inner wall of the upper end of the supporting main body 1.

Wherein, the emission button 401 is further provided with an anti-trigger cover 7.

The triggering part of the emission key 401 is enveloped with the triggering part of the supporting upper cover in the supporting main body 1, the four bone positions of the emission key 401 are sleeved with the supporting upper cover, the two components are mutually constrained and mutually limited to ensure the stable triggering direction, the stable tripping in four directions can be ensured only by pressing the emission key 401 during triggering, and the problem of easy dislocation in the triggering process is solved.

In the implantation tool according to the present embodiment, the trigger portion is located on the support body 1, and when the implantation tool is used, the trigger portion 4 is pressed to trigger the support body 1, so as to push the elastic hook arm 101 on the support body 1 to expand outward, so that the ejection base 2 loses the upward supporting force provided by the elastic hook arm 101, the ejection base 2 is disengaged from the position constraint of the hook arm, and is pushed downward by the force of the ejection spring 3 in a compressed state, the ejection body 5 moves downward along with the ejection base 2, and the sensing implantation needle 6 on the ejection body 5 pierces the skin of the human body.

Then, pierce human skin at sensing implantation needle 6, the sensor 10 that carries on the sensing implantation needle 6 persists in the human body, and sensing implantation needle 6 is retrieved in supporting main part 1 under the effect of withdrawing needle structure 9, and concrete process is:

the upper supporting cover is provided with a first constraint arm 904, the ejection base 2 is provided with a second constraint arm 905, the first constraint arm 904 can constrain the second constraint arm 905 on the ejection base 2 to prevent the second constraint arm 905 from expanding outwards, and as shown in fig. 5 and 6, the second constraint arm 905 does not bear the enveloping force of the first constraint arm 904 after moving downwards for a certain distance. Because the second constraint arm 905 is provided with the limit bump 906 for constraining the needle seat 902 to move upwards, when the second constraint arm 905 is under the enveloping force of the first constraint arm 904, the limit bump 906 limits the needle seat 902 to move upwards, and at this time, the needle withdrawing spring 901 is in a compressed state; however, as the ejection base 2 is separated from the elastic hook arm 101, the ejection spring 3 pushes the ejection base 2 downwards, after the implanted needle carrying sensor 10 penetrates the skin of the human body, the second constraint arm 905 moves downwards along with the ejection base 2 and is no longer subjected to the enveloping force of the first constraint arm 904, the needle withdrawing spring 901 which is in the compressed state provides an upward acting force for the needle base 902, the second constraint arm 905 which loses the constraint force provided by the first constraint arm 904 is moved outwards after being subjected to the upward acting force of the needle base 902, and the implanted needle is withdrawn into the support body 1 under the acting force of the needle withdrawing spring 901 to complete the needle withdrawing action.

It should be noted that the blood glucose emitting device according to the embodiment of the present application mainly includes an implantation tool portion and a signal emitter 8, and in order to prevent secondary infection, the implantation tool cannot be reused after implantation is completed, that is, the implantation tool is a disposable product. When the sensor 10 is implanted, the signal emitter 8 is attached to the skin, and the bottom of the signal emitter 8 is provided with a sticker 808.

After withdrawing the needle, the implanted needle is completely recovered into the support body 1 and is not exposed outside the device, so that accidental injury of the user by the needle body can be avoided; in addition, withdraw from behind the needle second restraint arm 905 and can't return to first restraint arm 904 inboard again, press trigger part 4 this moment and can't pierce human skin with sensing implantation needle 6 the secondary, consequently the implantation instrument that this embodiment relates to can't carry out the secondary usage, so have the advantage that prevents sensing implantation needle 6 reutilization, help improving the standardization of medical equipment use, more sanitary.

Wherein, the support body 1 includes: supporting the upper cover 105; a support lower cover 106 fitted with the support upper cover 105; the support lower cover 106 includes: a mounting butt joint part which is used for matching and connecting with the supporting upper cover and is covered on the outer side of the ejection main body 5; a position restraining part connected with the lower end of the butt joint part and used for restraining the position of the signal emitter 8; and the base ejection part is connected with the lower end of the position restriction part and can be attached to the surface of the skin.

Wherein, the signal transmitter 8 includes: a blood glucose data transmission unit connectable to the blood glucose test sensor 10; a blood sugar data transmitting part for transmitting the blood sugar data to the terminal; the blood sugar data transmission part is detachably connected with the blood sugar data emission part, and the blood sugar data emission part is assembled in the support main body 1.

In this embodiment, the implantation tool is a split structure, and it should be noted that the sterilization environment of the implantation tool is in a sterile workshop, and the sterilization mode mainly adopts laser ray sterilization, and the sterilization is finished to perform sealing treatment on the product, and the sealing sticker of the product is opened when the user uses the device. Because the electronic component part can appear damaging the components and parts after disinfecting, so do the disconnect-type design with electronic components, what the separation adopted is that implant instrument and transmitter separation assemble subassembly such as the waterproof silica gel visor of sensor sensing implantation needle 6 in implanting the instrument and carry out whole disinfection processing, so the design can realize comprehensive disinfection, can not produce any influence to the electron component ware again, ensures that the product uses safelyr and relieved.

As shown in Figs. 9 and 10, the implantation tool according to this embodiment may further be provided with a sterilization storage case 11; the disinfection storage box 11 is provided with a transmitter storage part 110 for placing the signal transmitter 8; the sterilizing storage box 11 is provided with an implantation tool storage portion 111 for storing the implantation tool. More specifically, both sides of the implant tool storage part 111 are provided with finger placement positions 112 for picking up the implant tool. In addition, a seal sticker tearing position 113 is provided on the implantation tool storage portion 111. This kind of mode of putting can guide the user to use fast, and the user only needs to tear the seal membrane and just can pack the transmitter into the implantation instrument facing to the draw-in groove, and it is convenient, labour saving and time saving to install.

Wherein, the signal transmitter 8 includes: an emitter housing composed of an emitter upper cover 801 and an emitter lower cover 802; the mounting base is arranged in the emitter shell; a printed circuit board 803, a flexible circuit board 804, a button cell 805 and a conductive electrode 806 which are arranged on the mounting base; a silica gel protective cover 807 clamped with the emitter upper cover 801; waterproof glue materials are filled in the joint of the upper transmitter cover 801 and the lower transmitter cover 802; waterproof glue materials are filled between the flexible circuit board 804 and the emitter upper cover 801 and between the flexible circuit board and the emitter lower cover 802; waterproof silicone is filled between the silicone protective cover 807 and the conductive electrode 806.

The transmitter upper cover FPC board adopts waterproof glue to realize the sealing and waterproof functions by dropping the waterproof glue into the glue seams; the waterproofing of the FPC board and the lower cover of the emitter is realized by coating a layer of waterproof glue on the bottoms of the emitter and the FPC board to prevent the FPC board and the lower cover of the emitter from sealing and waterproofing. The emitter upper cover 801 and the emitter lower cover 802 are waterproof by means of penetrating waterproof glue into the connecting seams to meet the waterproof requirement.

The silica gel protective cover, the waterproof silica gel and the conductive electrode are an assembly part, the conductive electrode is arranged in the waterproof silica gel, the waterproof silica gel is arranged in the silica gel protective cover 807, the silica gel protective cover 807 is provided with a buckle which is connected with the emitter upper cover 801 in a clamping mode, a concave point is arranged at the joint part of the emitting edge to position the direction, and the silica gel is deformed by the pulling force of the buckle position to achieve the waterproof effect. Specifically, the number of buckles is 3, and the number of pits is 3.

When 3 buckling positions of the silica gel protective cover 807 are buckled into the upper cover 801 of the emitter, the waterproof silica gel is deformed by the pulling force of the buckling positions, and when the conductive electrodes are communicated with the circuit of the FPC board in the deformation process, the waterproof silica gel and the FPC board can achieve the waterproof effect due to the compression force.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides an implantation instrument send needle and withdraw of needle mechanism which characterized in that includes:

a support body;

the ejection base is arranged in the support main body;

the ejection base is provided with a contact state connected with the support body and a separation state separated from the support body;

the ejection spring is arranged between the support body and the ejection base and used for pushing the ejection base downwards;

the ejection main body is arranged on the ejection base and can be used for installing the sensing implantation needle;

a needle withdrawing structure for receiving a skin penetrating sensing implantation needle within the support body.

2. The implant tool needle feed and withdrawal mechanism of claim 1, wherein the needle withdrawal mechanism comprises: the needle withdrawing spring is arranged on the ejection base; the needle head seat is arranged at the top of the needle withdrawing spring; the needle body fixing seat is connected with the needle head seat and used for fixing the sensing implantation needle; the first constraint arm is arranged in the support main body; the second constraint arm is arranged on the ejection base and has a contraction state constrained inside the first constraint arm and a disengagement state disengaged from the constraint of the first constraint arm; the second constraint arm is provided with a limiting and limiting bump for pressing the needle head seat downwards, and the limiting bump is used for pressing and limiting the needle head seat downwards when the second constraint arm is in a contraction state.

3. The implant tool needle feeding and withdrawing mechanism according to claim 2, wherein a support contact is provided at a side of an upper end of the second restraint arm adjacent to the first restraint arm.

4. The needle feeding and withdrawing mechanism of claim 3, wherein the needle base has a first bevel end around the upper end thereof, and the limiting protrusion has a second bevel end at the lower end thereof for engaging with the first bevel end.

5. The needle feeding and withdrawing mechanism of the implant tool as claimed in claim 1, wherein an elastic hooking arm is provided inside the supporting body; the ejection base is provided with a positioning structure matched with the elastic hook arm; the positioning structure has a positioning state arranged on the elastic hook arm and a disengagement state disengaged from the elastic hook arm.

6. The needle feeding and withdrawing mechanism of claim 5, wherein the supporting body is further provided with a triggering part for triggering the elastic hook arm to move outwards so as to enable the positioning structure to be in a disengaged state.

7. The implant tool needle feed and withdrawal mechanism of claim 6, wherein the resilient hook arm comprises: a hook arm body; the trigger lug is arranged on the hook arm main body and matched with the trigger part; locate on the hook arm main part, and be located trigger the spacing coupler body of lug lower part, spacing coupler body is used for spacing location structure.

8. The implant tool needle feed and withdrawal mechanism of claim 7, wherein the trigger portion comprises: the launching key is arranged on the upper part of the supporting main body and is used for pressing the elastic hook arm downwards and pushing the elastic hook arm to move outwards; a key compression spring located between the support body and the launch key; the middle part of the launching key is provided with a key positioning hook which is abutted against the inner wall of the upper end of the supporting main body.

9. The needle feeding and withdrawing mechanism of claim 8, wherein said firing button further comprises an anti-activation cap.

10. An implant tool, comprising: the implant tool needle feeding and withdrawing mechanism of any one of claims 1 to 9.

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