CN219109763U - Handle and medical device - Google Patents

Abstract

The utility model provides a handle and a medical device, wherein the handle comprises a first handle body and a second handle body which are meshed with each other; the first handle body is provided with a first cavity on one side close to the second handle body, the first handle body is also provided with a glue filling groove, the glue filling groove is communicated with the first cavity, the width of the glue filling groove in the direction vertical to the axial direction is larger than the diameter of the first cavity, and therefore the glue filling groove is provided with two ends parallel to the axial direction; one side of the second handle body, which is close to the first handle body, is provided with a second cavity, the second handle body is correspondingly provided with a pair of glue overflow bosses matched with the glue filling groove, and the glue overflow bosses are respectively arranged on two sides of the second cavity and are matched with the shapes of two end parts of the glue filling groove. The utility model can improve the connection firmness between the needle tube and the handle, thereby effectively preventing the needle tube from falling off from the handle in the process of rotating or pulling the needle tube by an operator.

Description

Handle and medical device

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a handle and a medical device.

Background

The existing medical device with needle tube in market, for example, egg taking needle, the inner cavity structure of the handle is a straight cavity or a cone section which penetrates through, the handle and the needle tube are connected by adopting sleeve type traditional structure to carry out photo-curing glue, the photo-curing glue is positioned in the gap between the inner cavity of the handle and the outer surface of the stainless steel needle tube, the glue permeates into the gap through the fluidity of the glue, and the glue cannot effectively, uniformly and fully flow into the gap due to certain viscosity, so that the local position of the stainless steel needle tube cannot be effectively bonded with the handle, the connection firmness and the torque are not in accordance with the requirements, and the stainless steel needle tube can drop from the handle in the process of rotating or pulling the stainless steel needle tube by an operator. In addition, in the process of glue dispensing, because the stainless steel needle tube is in clearance fit with the handle, the stainless steel needle tube is easy to loose in the process of moving the conveyor belt of the UV light curing equipment, and the fixed position of the stainless steel needle tube cannot be ensured to be accurate, so that the effective length of the stainless steel needle tube extending out of the head end of the handle is not in a control range.

It should be noted that the information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Disclosure of Invention

The utility model aims to provide a handle and a medical device, which can ensure that the connection between the handle and a needle tube is firmer, and effectively prevent the needle tube from falling off from the handle in the process of rotating or pulling the needle tube by an operator.

In order to achieve the above object, the present utility model provides a handle, comprising a first handle body and a second handle body which are engaged with each other;

a first cavity extending in the axial direction and penetrating through the first handle body is formed in one side, close to the second handle body, of the first handle body, and a glue filling groove is formed in the proximal end and/or the distal end of the first handle body simultaneously or independently, the glue filling groove is communicated with the first cavity, the depth of the glue filling groove is larger than that of the first cavity, and the width of the glue filling groove in the direction perpendicular to the axial direction is larger than the diameter of the first cavity, so that the glue filling groove is provided with two ends parallel to the axial direction;

The utility model discloses a glue filling device, including first handle body, second handle body, first handle body, second handle body, first handle body is close to one side of first handle body is equipped with runs through the axial extension of second handle body and with the second cavity that the first cavity corresponds to set up, first cavity with the second cavity constitutes the accommodation space that is used for holding the needle tubing jointly, the proximal end and/or the distal end of second handle body with the position that the glue filling groove corresponds is equipped with a pair of glue overflow boss of glue filling groove matched with, glue overflow boss divide to list in the both sides of second cavity, and with the shape phase-match of two tip in glue filling groove.

Optionally, a distance between two glue overflow bosses of each pair of glue overflow bosses is equal to a diameter of the second cavity.

Optionally, the glue filling groove comprises a first glue filling groove body and a second glue filling groove body which are mutually communicated, a step is formed at the joint of the two glue filling groove bodies, the first glue filling groove body is arranged close to the second handle body, and the width of the first glue filling groove body is larger than that of the second glue filling groove body; each glue overflow boss comprises a first table body and a second table body which are respectively parallel to the axial extension, the connecting parts of the first table body and the second table body form a step shape, and the first table body is close to the first handle body.

Optionally, a clamping groove is formed in one side, close to the second handle, of the first handle, and a clamping piece matched with the clamping groove is correspondingly arranged on one side, close to the first handle, of the second handle.

Optionally, the draw-in groove includes first slot and the second slot of mutual intercommunication, first slot is close to the setting of second handle body, first slot including set up in two sub-slots on first cavity both sides, sub-slot with the second slot is linked together, the joint piece including correspond set up in two buckles on second cavity both sides.

Optionally, both sides of the second groove are respectively arranged in a corresponding manner and extend towards a direction away from the axis of the first cavity, so that a first overlapping surface for overlapping the buckle can be formed between the second groove and the sub groove.

Optionally, the buckle includes buckle body and the pothook that extends in parallel with the axial respectively, and both interconnect and form hook-shaped section, the pothook is close to first handle body setting, one side of keeping away from of the axis of second cavity for the buckle body is towards keeping away from the direction of the axis of second cavity extends the setting, in order to the buckle body with form the second overlap joint face between the pothook.

Optionally, the inner wall of the side of the sub-groove far away from the axis of the first cavity is obliquely arranged, and the inclination angle is 10-60 degrees.

Optionally, the second groove is disposed through two radial ends of the first handle body.

Optionally, one side of the first handle body near the second handle body is equipped with a plurality of guide ways, a plurality of guide ways distribute in the both sides of first cavity, one side of the second handle body near the first handle body corresponds and is equipped with a plurality of guide posts, the guide way with the guide post one-to-one cooperatees.

Optionally, the inner diameter of the guide groove gradually decreases along the depth direction, and the inner diameter of the guide groove near the end of the second handle body is larger than the inner diameter far away from the end of the second handle body, the outer diameter of the guide post gradually decreases, and the outer diameter of the guide post near the end of the first handle body is smaller than the outer diameter far away from the end of the first handle body.

Optionally, a plurality of limiting parts are arranged on the inner wall of the glue overflow boss, so that the second handle body can be in interference fit with the needle tube.

Optionally, a first chamfer groove is formed at the proximal end and/or the distal end of the first handle body, and a second chamfer groove matched with the first chamfer groove is correspondingly formed at the proximal end and/or the distal end of the second handle body.

To achieve the above object, the present utility model also provides a medical device comprising a needle tube and the handle as described above.

Compared with the prior art, the handle and the medical device provided by the utility model have the following advantages:

the handle provided by the utility model comprises a first handle body and a second handle body which are meshed with each other; a first cavity extending in the axial direction and penetrating through the first handle body is formed in one side, close to the second handle body, of the first handle body, and a glue filling groove is formed in the proximal end and/or the distal end of the first handle body simultaneously or independently, the glue filling groove is communicated with the first cavity, the depth of the glue filling groove is larger than that of the first cavity, and the width of the glue filling groove in the direction perpendicular to the axial direction is larger than the diameter of the first cavity, so that the glue filling groove is provided with two ends parallel to the axial direction; the utility model discloses a glue filling device, including first handle body, second handle body, first handle body, second handle body, first handle body is close to one side of first handle body is equipped with runs through the axial extension of second handle body and with the second cavity that the first cavity corresponds to set up, first cavity with the second cavity constitutes the accommodation space that is used for holding the needle tubing jointly, the proximal end and/or the distal end of second handle body with the position that the glue filling groove corresponds is equipped with a pair of glue overflow boss of glue filling groove matched with, glue overflow boss divide to list in the both sides of second cavity, and with the shape phase-match of two tip in glue filling groove. According to the utility model, the handle is of a structure of the second handle body of the first handle body which is meshed with each other, and the first handle body is provided with the glue filling groove communicated with the first cavity, so that when the handle and the needle tube are assembled, glue can be firstly filled into the first cavity and the glue filling groove, and the needle tube is placed in the second cavity of the second handle body; then will overflow glue boss inserts corresponding fill in the glue groove, glue in the glue groove produces the overflow glue because of receiving the extrusion of overflow glue boss to cover the clearance between glue groove and the overflow glue boss, simultaneously, glue in the first cavity also can produce the overflow glue because of receiving the extrusion of needle tubing, in order to cover accommodation space with clearance between the needle tubing, after adopting solidification equipment to solidify, can make the needle tubing with the handle can firmly be fixed together, in order to guarantee the handle with the moment of torsion of the junction of needle tubing satisfies the demand. Therefore, when the handle provided by the utility model is matched with the needle tube, the connection firmness between the needle tube and the handle can be improved, so that the problem that the needle tube falls off from the handle in the process of rotating or pulling the needle tube by an operator can be effectively prevented.

Because the medical device provided by the utility model and the handle provided by the utility model belong to the same utility model conception, the medical device provided by the utility model has all the advantages of the handle provided by the utility model, and the beneficial effects of the medical device provided by the utility model are not repeated here.

Drawings

FIG. 1 is a schematic diagram of the connection between a handle and a needle cannula in the prior art;

FIG. 2 is a schematic view of a handle according to an embodiment of the present utility model when mated with a needle cannula;

FIG. 3 is a cross-sectional view of the handle of FIG. 2 taken along the A-A plane;

FIG. 4 is a cross-sectional view of the handle of FIG. 2 taken along the B-B plane;

fig. 5 is a schematic perspective view of a first handle according to an embodiment of the present utility model;

fig. 6 is a schematic perspective view of a second handle according to an embodiment of the present utility model;

FIG. 7 is a schematic plan view of a first handle according to an embodiment of the present utility model;

FIG. 8 is a cross-sectional view of the first shank body shown in FIG. 7, taken along the C-C plane;

FIG. 9 is a cross-sectional view of the first shank body shown in FIG. 7, taken along the D-D plane;

FIG. 10 is a schematic plan view of a second handle according to an embodiment of the present utility model;

FIG. 11 is a cross-sectional view of the second shank shown in FIG. 10 taken along the E-E plane;

FIG. 12 is a cross-sectional view of the second shank body shown in FIG. 10 taken along the plane F-F;

fig. 13 is a flowchart illustrating an assembling method of a medical device according to an embodiment of the present utility model.

Wherein, the reference numerals are as follows:

a handle-10;

needle tube-20;

a first shank-100; a first cavity-110; filling glue groove-120; a first glue filling tank body-121; a second glue filled tank-122; a card slot-130; a first trench-131; sub-trench-1311; a second trench-132; a first faying surface-133; guide grooves-140; a first chamfer groove-150;

a second handle body-200; a second cavity-210; glue overflow boss-220; a first stage-221; a second stage-222; a clamping piece-230; a clasp-231; a clasp body-2311; hook-2312; a second faying surface-2313; guide post-240; a limiting piece-250; and a second chamfer groove-260.

Detailed Description

The handle, the medical device and the method of assembling the medical device according to the present utility model are described in further detail below with reference to the accompanying drawings and detailed description. The advantages and features of the present utility model will become more apparent from the following description. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for the purpose of facilitating and clearly aiding in the description of embodiments of the utility model. For a better understanding of the utility model with objects, features and advantages, refer to the drawings. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are shown only in connection with the present disclosure for the understanding and reading of the present disclosure, and are not intended to limit the scope of the utility model, which is defined by the appended claims, and any structural modifications, proportional changes, or dimensional adjustments, which may be made by the present disclosure, should fall within the scope of the present disclosure under the same or similar circumstances as the effects and objectives attained by the present utility model. Specific design features of the utility model disclosed herein, including for example, specific dimensions, orientations, positions, and configurations, will be determined in part by the specific intended application and use environment. In the embodiments described below, the same reference numerals are used in common between the drawings to denote the same parts or parts having the same functions, and the repetitive description thereof may be omitted. In this specification, like reference numerals and letters are used to designate like items, and thus once an item is defined in one drawing, no further discussion thereof is necessary in subsequent drawings. Additionally, if a method described herein comprises a series of steps, and the order of the steps presented herein is not necessarily the only order in which the steps may be performed, and some of the described steps may be omitted and/or some other steps not described herein may be added to the method.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. The singular forms "a," "an," and "the" include plural referents, the term "or" is generally used in the sense of comprising "and/or" and the term "several" is generally used in the sense of comprising "at least one," the term "at least two" is generally used in the sense of comprising "two or more," and the term "first," "second," "third," are for descriptive purposes only and are not to be construed as indicating or implying any relative importance or number of features indicated.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and to simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In order to facilitate understanding of the innovative points of the present utility model, the handle, the medical device and the method of assembling the medical device provided by the present utility model will be described first with reference to the method of connecting the handle and the needle tube in the prior art. Referring to fig. 1, a schematic diagram of the connection between a handle and a needle tube in the prior art is schematically shown. As shown in fig. 1, in the prior art, a light-cured adhesive is used to bond the needle tube 20 and the handle 10, and the bonding position of the light-cured adhesive is in a gap between the inner cavity of the handle 10 and the needle tube 20, and the inner cavity structure of the handle 10 is a whole section of straight cavity or a tapered inner cavity. The handle 10 has the problem of poor sealing performance due to the occurrence of bubbles in a glue filling area in the glue dispensing process; or the glue does not penetrate the inner cavity of the handle 10 in time to be solidified, so that the phenomenon of ineffective adhesion of the local area between the handle 10 and the needle tube 20 can occur. This further results in the operator loosening the needle cannula 20 from the handle 10 and even the removal of the needle cannula 20 from the handle 10 due to insufficient connection strength between the handle 10 and the needle cannula 20 when pulling or axially twisting the needle cannula 20.

The key idea of the present utility model is to provide a handle 10, a medical device and a method for assembling a medical device, which can make the connection between the handle 10 and the needle cannula 20 more firm, and effectively prevent the needle cannula 20 from falling off from the handle 10 during the process of rotating or pulling the needle cannula 20 by an operator. It should be noted that, as those skilled in the art will understand, the term "proximal" refers to an end near the operator, and the term "distal" refers to an end far from the operator, that is, an end near the patient. It should be noted that, as will be appreciated by those skilled in the art, the needle cannula 20 may be a biopsy needle cannula for taking a biopsy or an ovum aspiration needle cannula for taking an ovum, although the needle cannula 20 may be used for other purposes, and the present utility model is not limited thereto.

To achieve the foregoing, the present utility model provides a handle, please refer to fig. 2 to 6, wherein fig. 2 schematically illustrates a structure of a handle 10 according to an embodiment of the present utility model when the handle is matched with a needle cannula 20; FIG. 3 schematically illustrates a cross-sectional view of the handle 10 of FIG. 2 along the A-A plane; FIG. 4 schematically illustrates a cross-sectional view of the handle 10 of FIG. 2 along the B-B plane; fig. 5 schematically illustrates a perspective view of a first handle 100 according to an embodiment of the present utility model; fig. 6 schematically shows a schematic perspective view of a second handle 200 according to an embodiment of the present utility model. As shown in fig. 2 to 6, the handle 10 includes a first handle body 100 and a second handle body 200 engaged with each other; as shown in fig. 4-5, a first cavity 110 (preferably a straight cavity) extending through the first handle body 100 in the axial direction is provided on one side of the first handle body 100 near the second handle body 200, and a glue filling groove 120 is simultaneously or separately provided on the proximal end and/or the distal end of the first handle body 100, wherein the glue filling groove 120 is communicated with the first cavity 110, and the depth of the glue filling groove 120 is greater than that of the first cavity 110; and, the width of the glue groove 120 in the direction perpendicular to the axial direction is larger than the diameter of the first cavity 110, preferably symmetrically arranged in the axial direction, whereby the glue groove 120 has both ends parallel to the axial direction.

As shown in fig. 6, a second cavity 210 (preferably, a straight cavity) extending axially through the second handle body 200 and disposed corresponding to the first cavity 110 is disposed on a side of the second handle body 200 near the first handle body 100, and the first cavity 110 and the second cavity 210 together form an accommodating space for accommodating the needle tube 20. The proximal end and/or the distal end of the second handle body 200 are/is provided with a pair of glue overflow bosses 220 matching with the glue filling groove 120 at positions corresponding to the glue filling groove 120, and the glue overflow bosses 220 are arranged on two sides of the second cavity 210 and are matched with the shapes of two ends of the glue filling groove 120.

According to the utility model, the handle 10 is provided with the first handle body 100 and the second handle body 200 which are meshed with each other, and the first handle body 100 is provided with the glue filling groove 120 communicated with the first cavity 110, so that when the handle 10 and the needle tube 20 are assembled, glue can be firstly filled in the first cavity 110 and the glue filling groove 120, and the needle tube 20 can be placed in the second cavity 210 of the second handle body 200; then insert the glue overflow boss 220 into the corresponding glue filling slot 120, glue in the glue filling slot 120 is overflowed due to extrusion of the glue overflow boss 220, so as to cover a gap between the glue filling slot 120 and the glue overflow boss 220, meanwhile, glue in the first cavity 110 is overflowed due to extrusion of the needle tube 20, so as to cover a gap between the accommodating space and the needle tube 20, and after solidification is performed by adopting solidification equipment, the needle tube 20 and the handle 10 can be firmly fixed together, so that torque at a joint of the handle 10 and the needle tube 20 can meet requirements. Therefore, when the handle 10 provided by the utility model is matched with the needle tube 20, the connection firmness between the needle tube 20 and the handle 10 can be improved, so that the problem that the needle tube 20 falls off from the handle 10 in the process of rotating or pulling the needle tube 20 by an operator can be effectively prevented.

It should be noted that, as those skilled in the art will appreciate, the diameter of the first cavity 110 and the diameter of the second cavity 210 are both larger than the outer diameter of the needle cannula 20 that is matched with the handle 10, and the diameter of the first cavity 110 is the same as the diameter of the second cavity 210. In addition, as will be appreciated by those skilled in the art, a handle 10 having first and second cavities 110, 210 of corresponding diameters may be selected for different gauges of syringes 20.

In an exemplary embodiment, the difference between the diameter of the first cavity 110 and the outer diameter of the needle cannula 20 is between 0.04mm and 0.2mm, and the difference between the diameter of the second cavity 210 and the outer diameter of the needle cannula 20 is between 0.04mm and 0.2 mm. Thus, the arrangement ensures that the adhesive layers with sufficient thickness between the first cavity 110 and the second cavity 210 and the needle cannula 20 can be firmly connected with the needle cannula 20, so that the problem that the needle cannula 20 falls off from the handle 10 in the process of rotating or pulling the needle cannula 20 by an operator can be effectively prevented.

Preferably, the axis of the first cavity 110 is collinear with the axis of the first handle 100, and the axis of the second cavity 210 is collinear with the axis of the second handle 200. This arrangement ensures that the needle cannula 20 is coaxially disposed with the needle shaft after the handle 10 is assembled with the needle cannula 20.

Specifically, the materials of the first handle body 100 and the second handle body 200 are all high molecular plastics, such as ABS (acrylonitrile-butadiene-styrene copolymer), PP (polypropylene), PE (polyethylene), PS (polystyrene), PC (polycarbonate), ABS (acrylonitrile-butadiene-styrene copolymer) +pc (polycarbonate), PVC (polyvinyl chloride), and the like.

With continued reference to fig. 5, as shown in fig. 5, preferably, two glue filling grooves 120 are disposed on a side of the first handle body 100 near the second handle body 200, wherein one glue filling groove 120 is disposed near the proximal end of the first handle body 100, and the other glue filling groove 120 is disposed near the distal end of the first handle body 100, and the two glue filling grooves 120 may divide the first cavity 110 into three subchambers. In accordance therewith, referring to fig. 6, two pairs of glue overflow bosses 220 are disposed on a side of the second handle body 200 adjacent to the first handle body 100, wherein one pair of glue overflow bosses 220 is disposed adjacent to the proximal end of the first handle body 100, and the other pair of glue overflow bosses 220 is disposed adjacent to the distal end of the first handle body 100. Each pair of glue overflow bosses 220 are respectively arranged at two sides of the second cavity 210. Thus, the arrangement effectively ensures that the proximal end and the distal end of the handle 10 can be firmly fixed with the needle cannula 20, thereby further effectively preventing the needle cannula 20 from falling off the handle 10 during the process of rotating or pulling the needle cannula 20 by an operator.

Further, referring to fig. 6, in an exemplary embodiment, as shown in fig. 6, a distance between two glue overflow ledges 220 of each pair of glue overflow ledges 220 is equal to a diameter of the second cavity 210. This arrangement thus further facilitates securing the needle cannula 20 within the second cavity 210 when the handle 10 and the needle cannula 20 are assembled. In addition, this arrangement can ensure that after the glue overflow boss 220 extends into the glue filling groove 120, the glue in the glue filling groove 120 can firmly fix the needle tube 20 between each pair of glue overflow bosses 220, so as to further improve the connection firmness between the needle tube 20 and the handle 10, and further effectively prevent the problem that the needle tube 20 falls off from the handle 10 in the process of rotating or pulling the needle tube 20 by an operator.

With continued reference to fig. 6 to 8, fig. 7 schematically illustrates a schematic plan view of a first handle body 100 according to an embodiment of the present utility model; fig. 8 schematically illustrates a cross-sectional view of the first shank 100 shown in fig. 7 along the C-C plane. As shown in fig. 8, the glue filling groove 120 includes a first glue filling groove body 121 and a second glue filling groove body 122 that are mutually communicated, a step is formed at a joint of the two glue filling groove bodies, the first glue filling groove body 121 is disposed close to the second handle body 200, and a width of the first glue filling groove body 121 is greater than a width of the second glue filling groove body 122. Further, as shown in fig. 6, each glue overflow boss 220 includes a first stage 221 and a second stage 222 extending parallel to the axial direction, respectively, where the two stages are connected to form a step shape, and the first stage 221 is disposed close to the first handle 100. Therefore, by setting the glue filling groove 120 to be in an inverted "convex" structure and setting the glue overflow boss 220 to be in a "convex" structure, the glue area filled between the glue filling groove 120 and the glue overflow boss 220 can be effectively increased, so that the stability of connection between the first handle body 100 and the second handle body 200 can be improved, and further, the problem that the needle tube 20 falls off from the handle 10 in the process of rotating or pulling the needle tube 20 by an operator can be further effectively prevented.

In an exemplary embodiment, the single-sided fit clearance between the glue groove 120 and the glue overflow ledge 220 is 0.05mm to 0.2mm. Therefore, the glue filling groove 120 and the glue overflow boss 220 can have a sufficient thickness, so that the first handle body 100 and the second handle body 200 can be firmly fixed together, and the problem that the needle tube 20 falls off from the handle 10 in the process of rotating or pulling the needle tube 20 by an operator can be further effectively prevented.

With continued reference to fig. 4, 5 and 8, as shown in fig. 4, 5 and 8, in an exemplary embodiment, a clamping groove 130 is disposed on a side of the first handle body 100 near the second handle body 200, and a clamping piece 230 corresponding to the clamping groove 130 is disposed on a side of the second handle body 200 near the first handle body 100. Optionally, the clamping groove 130 is located between two glue filling grooves 120 of the first handle body 100, and the clamping piece 230 is located between two pairs of glue overflow bosses 220 of the second handle body 200. Therefore, the stability of the connection between the first handle body 100 and the second handle body 200 can be further improved by the engaging groove 130 and the engaging member 230 which are engaged with each other, so that the problem that the needle tube 20 falls off from the handle 10 during the process of rotating or pulling the needle tube 20 by an operator can be further effectively prevented.

With continued reference to fig. 3, 5 and 8, as shown in fig. 3, 5 and 8, in an exemplary embodiment, the clamping groove 130 includes a first groove 131 and a second groove 132 that are mutually communicated, the first groove 131 is disposed near the second handle 200, the first groove 131 includes two sub-grooves 1311 disposed at two sides of the first cavity 110, the sub-grooves 1311 are communicated with the second groove 132, and further, as shown in fig. 6, the clamping member 230 includes two buckles 231 correspondingly disposed at two sides of the second cavity 210. Therefore, the overall structure of the handle 10 provided by the utility model can be further simplified, and both sides of the first handle body 100 and both sides of the second handle body 200 can be ensured to be clamped, so that the stability of the connection between the first handle body 100 and the second handle body 200 can be further improved. It should be noted that, as those skilled in the art will appreciate, the shape of the second groove 132 may be rectangular, trapezoidal or circular, which is not limited by the present utility model.

With continued reference to fig. 3, 5 and 9, fig. 9 schematically illustrates a cross-sectional view of the first shank 100 of fig. 7 taken along the D-D plane. As shown in fig. 3, 5 and 9, both sides of the second groove 132 are respectively extended toward a direction away from the axis of the first cavity 110 with respect to the sub groove 1311, so that a first overlapping surface 133 for overlapping the clip 231 can be formed between the second groove 132 and the sub groove 1311. Therefore, the clamping groove 130 and the clamping piece 230 can be more conveniently clamped, the clamping groove 130 and the clamping piece 231 can be effectively increased in contact area with the clamping groove 231 by being lapped on the first lapping surface 133, so that the stability of connection between the first handle body 100 and the second handle body 200 can be further improved, and the problem that the needle tube 20 falls off from the handle 10 in the process of rotating or pulling the needle tube 20 by an operator can be further effectively prevented.

With continued reference to fig. 6, 10 and 11, fig. 10 schematically illustrates a plan view of a second handle 200 according to an embodiment of the present utility model; fig. 11 schematically shows a cross-sectional view of the second shank 200 shown in fig. 10 along the plane E-E. As shown in fig. 6, 10 and 11, the clip 231 includes a clip body 2311 and a hook 2312 respectively extending parallel to the axial direction, which are connected to each other and form a hook-shaped section, the hook 2312 is disposed near the first handle 100, and a side of the hook 2312 away from the axis of the second cavity 210 is disposed to extend toward a direction away from the axis of the second cavity 210 with respect to the clip body 2311, so as to form a second overlapping surface 2313 between the clip body 2311 and the hook 2312. Therefore, the arrangement not only can more facilitate the erection of the buckle 231 on the first overlap surface 133, but also can further improve the contact area between the clamping groove 130 and the buckle 231 through the first overlap surface 133 and the second overlap surface 2313 which are matched with each other, thereby further improving the stability of the connection between the first handle body 100 and the second handle body 200, and further effectively preventing the problem that the needle tube 20 falls off from the handle 10 in the process of rotating or pulling the needle tube 20 by an operator. It should be noted that, although fig. 6 and fig. 11 illustrate the hook 2312 as an example with an arch shape, as those skilled in the art will appreciate, this is not a limitation of the present utility model, and in other embodiments, the shape of the hook 2312 may be rectangular or semicircular.

Preferably, the contact width between the first and second overlapping surfaces 133 and 2313 is between 0.3mm and 1 mm. Therefore, the arrangement ensures that the first and second overlapping surfaces 133 and 2313 have a large enough contact area, so that the stability of the connection between the first and second handle bodies 100 and 200 can be further improved, and the problem that the needle tube 20 falls off from the handle 10 in the process of rotating or pulling the needle tube 20 by an operator can be further effectively prevented.

With continued reference to fig. 9, as shown in fig. 9, an inner wall of the sub-groove 1311 on a side far away from the axis of the first cavity 110 is inclined at an angle of 10 ° to 60 °. Therefore, by setting the sub-groove 1311 to be an inverted trapezoid structure with a larger inner diameter near the end of the second handle body 200 and a smaller inner diameter far away from the end of the second handle body 200, the hook 2312 can be more conveniently clamped into the sub-groove 1311, so that the second overlapping surface 2313 contacts with the first overlapping surface 133, and the clamping between the clamping piece 230 and the clamping groove 130 is smoothly realized.

With continued reference to fig. 5 and 9, as shown in fig. 5 and 9, the second grooves 132 are disposed through both radial ends of the first shank 100. Therefore, the clamping groove 130 can be more conveniently machined on the first handle body 100, so that the integral structure of the first handle body 100 is simplified.

With continued reference to fig. 4, 5, 6, 8 and 12, fig. 12 schematically illustrates a cross-sectional view of the second shank 200 of fig. 10 taken along the F-F plane. As shown in fig. 4, 5, 6, 8 and 12, a plurality of guide grooves 140 are disposed on a side of the first handle body 100 near the second handle body 200, the plurality of guide grooves 140 are distributed on two sides of the first cavity 110, and further, the guide grooves 140 are separated on two sides of at least one glue filling groove 120. In one embodiment, a pair of guide grooves 140 are provided on both sides of the two glue grooves 120. Correspondingly, a plurality of guide posts 240 are correspondingly arranged on one side of the second handle body 200 close to the first handle body 100, and the guide grooves 140 are matched with the guide posts 240 one by one. Therefore, the guiding function can be achieved through the guiding groove 140 and the guiding post 240 which are matched with each other, so that the first handle body 100 and the second handle body 200 can be ensured to be buckled with each other without eccentric phenomenon, and further, step difference between the first handle body 100 and the second handle body 200 can not occur.

With continued reference to fig. 4, 8 and 12, as shown in fig. 4, 8 and 12, the inner diameter of the guide groove 140 is gradually reduced along the depth direction, and the inner diameter of the end of the guide groove 140 near the second handle body 200 is larger than the inner diameter of the end far from the second handle body 200, the outer diameter of the guide post 240 is gradually reduced, and the outer diameter of the end of the guide post 240 near the first handle body 100 is smaller than the outer diameter of the end far from the first handle body 100. Therefore, the guiding groove 140 and the guiding post 240, which are matched with each other, can perform a better guiding function, so that the first handle body 100 and the second handle body 200 can be further ensured to be buckled with each other without eccentric phenomenon. It should be noted that, in other embodiments, the guide groove 140 may be a round counter bore, a hexagonal hole, a conical hole, or a rounded rectangular waist groove, and correspondingly, the guide post 240 may be a cylinder, a hexagonal prism, a cone, or a rounded rectangular post.

In an exemplary embodiment, the single-sided fit clearance between the guide groove 140 and the guide post 240 is 0.05mm to 0.2mm. Therefore, glue can be filled in the gap between the guide groove 140 and the guide post 240, so that the guide post 240 can be stably fixed in the guide groove 140, and the stability of the connection between the first handle body 100 and the second handle body 200 can be further improved. In addition, by setting the one-sided fit gap between the guide groove 140 and the guide post 240 to 0.05mm to 0.2mm, it is possible to ensure that an adhesive layer having a sufficient thickness can be provided between the guide groove 140 and the guide post 240, so that the guide groove 140 and the guide post 240 can be firmly fixed together, to further improve the stability of the connection between the first and second handles 100 and 200.

Further, after the guide posts 240 are inserted into the corresponding guide grooves 140, the distance between the end of the guide post 240 having the smaller outer diameter (i.e., the top of the guide post 240) and the bottom of the guide groove 140 is between 0 and 0.5 mm. Therefore, glue may be further filled in the gap between the top of the guide post 240 and the bottom of the guide groove 140, so as to further ensure that the guide post 240 may be stably fixed in the guide groove 140, thereby further improving the stability of the connection between the first handle body 100 and the second handle body 200.

With continued reference to fig. 11, as shown in fig. 11, a plurality of limiting members 250 are disposed on an inner wall of the glue overflow boss 220, so that the second handle body 200 can be in interference fit with the needle tube 20. Therefore, by arranging the plurality of limiting members 250, the interference fit between the glue overflow boss 220 and the needle tube 20 (i.e. the interference fit between the second handle body 200 and the needle tube 20) is realized, so that the needle tube 20 is not easy to loose in the moving process of the conveyor belt of the curing equipment, and the fixed position of the needle tube 20 in the accommodating space is ensured to be accurate, so that the effective length of the distal end of the needle tube 20 extending out of the handle 10 is within a preset range.

Further, at least two of the limiting members 250 are disposed at the inner side of the glue overflow boss 220, and the distance between the two limiting members 250 is smaller than the outer diameter of the needle tube 20. Therefore, the arrangement can effectively ensure that the glue overflow bosses 220 are symmetrically arranged along the axis of the needle tube 20, and further ensure that the needle tube 20 is not easy to loose in the moving process of the conveyor belt of the curing equipment. It should be noted that, as those skilled in the art will appreciate, the specific shape of the limiting member 250 is not limited in the present utility model, and the shape of the limiting member 250 may be a semicircle, a trapezoid, a triangle, or the like.

Further, the difference between the distance between the two stoppers 250 and the outer diameter of the needle tube 20 is between 0.1mm and 0.2 mm. Therefore, the setting can ensure that the limiting piece 250 can realize interference fit between the glue overflow boss 220 and the needle tube 20, and also ensure that the needle tube 20 can be smoothly in interference clamping connection with the second handle body 200 through deformation of the limiting piece 250.

Preferably, as shown in fig. 11, the limiting member 250 is disposed on a side of the second stage 222 near the axis of the second shank 200. Thus, such an arrangement may further facilitate an interference fit between the second shank 200 and the needle cannula 20.

With continued reference to fig. 5, 6, 7 and 10, as shown in fig. 4, 6, 7 and 10, a first chamfer groove 150 is provided at a proximal end and/or a distal end of the first handle body 100, and a second chamfer groove 260 corresponding to the first chamfer groove 150 is provided at a proximal end and/or a distal end of the second handle body 200. Specifically, when the proximal end of the first handle body 100 is provided with the first chamfer groove 150, the proximal end of the second handle body 200 is correspondingly provided with a second chamfer groove 260 matched with the first chamfer groove 150; when the distal end of the first handle body 100 is provided with the first chamfer groove 150, the distal end of the second handle body 200 is correspondingly provided with a second chamfer groove 260 matched with the first chamfer groove 150. Therefore, glue can be injected into the first chamfer groove 150 and the second chamfer groove 260 which are matched with each other to seal the proximal end and/or the distal end of the handle 10, so that the tightness of the connection between the handle 10 and the needle tube 20 can be ensured, the connection firmness between the handle 10 and the needle tube 20 can be further ensured, and the torque at the connection part of the handle 10 and the needle tube 20 can be ensured to meet the requirement. It should be noted that, as those skilled in the art will appreciate, the first chamfer groove 150 and the second chamfer groove 260 may be rounded grooves, and may be other shapes, which are not limited in the present utility model.

In order to achieve the above-mentioned idea, the present utility model further provides a medical device, referring to fig. 2, and as shown in fig. 2, the medical device includes a needle tube 20 and the handle 10 described above. Therefore, the medical device provided by the utility model can improve the connection firmness between the needle tube 20 and the handle 10 so as to ensure that the torque at the connection part of the handle 10 and the needle tube 20 meets the requirement, thereby effectively preventing the needle tube 20 from falling off from the handle 10 in the process of rotating or pulling the needle tube 20 by an operator.

In order to achieve the above-mentioned idea, the present utility model further provides a method for assembling a medical device as described above, please refer to fig. 13, which schematically shows a flowchart of a method for assembling a medical device according to an embodiment of the present utility model. As shown in fig. 13, the method for assembling a medical device provided by the present utility model includes the steps of:

step S100, injecting glue into the first cavity 110 of the first handle body 100 and the glue filling groove 120.

Step S200, placing the needle cannula 20 in the second cavity 210 of the second handle body 200, and adjusting the position of the needle cannula 20 so that the distal end of the needle cannula 20 extends out of the distal end of the second handle body 200, and the extending length is within a preset range.

Step S300, inserting the glue overflow boss 220 of the second handle body 200 into the corresponding glue filling slot 120, so as to fix the second handle body 200 with the needle tube 20 and the first handle body 100, and adjusting the positional relationship between the first handle body 100 and the second handle body 200, so that the first handle body 100 is flush with the second handle body 200 without a level difference surface.

Step S400, erasing the glue overflowing the first handle body 100 and the second handle body 200, and curing the glue in the first handle body 100 and the second handle body 200 by using curing equipment.

Step S500, glue filling is performed on the proximal end and/or the distal end of the handle 10 composed of the first handle body 100 and the second handle body 200, and curing is performed by using a curing device, so as to complete the assembly of the medical device.

Therefore, the medical device assembled by adopting the assembling method provided by the utility model can ensure that the connection between the handle 10 and the needle tube 20 is firmer, so that the torque at the connection part of the handle 10 and the needle tube 20 meets the requirement, and the problem that the needle tube 20 falls off from the handle 10 in the process of rotating or pulling the needle tube 20 by an operator is effectively prevented.

Specifically, the first handle body 100 may be placed on a workbench, and UV light curing glue is uniformly filled in the first cavity 110 and the glue filling groove 120, and no obvious bubbles are ensured, wherein the glue depth in the glue filling groove 120 should be greater than 1/3 of the total depth of the glue filling groove 120. The needle cannula 20 is then placed into the second cavity 210 of the second handle body 200 and the needle cannula 20 is depressed until the needle cannula 20 is interference fit with the second handle body 200. The position of the needle cannula 20 is then adjusted to confirm that the effective length of the needle cannula 20 extending beyond the distal end of the second handle body 200 is within a predetermined range, and to confirm the needle tip direction of the needle cannula 20 (i.e., the distal end direction of the needle cannula 20). And aligning the clamping member 230 to the clamping groove 130, pressing the clamping member 230 down, wherein the clamping hook 2312 of the clamping member 230 contacts with the sub-groove 1311 and moves further downwards along the inclined surface thereof, and at the same time, the clamping hook 2312 deforms towards the axial direction of the second handle body 200 until the second overlap surface 2313 contacts with the first overlap surface 133, and the clamping hook 2312 of the clamping member 230 rebounds and returns to the original state, thereby completing the physical interference fixation of the first handle body 100 and the second handle body 200. Glue in the glue filling groove 120 is extruded by the glue overflow boss 220 to generate glue overflow, and the overflow glue can uniformly cover the gap between the glue filling groove 120 and the glue overflow boss 220. The buckled handle 10 is adjusted so that the first handle body 100 is flush with the second handle body 200 without a level difference surface. Glue that overflows the periphery of the handle 10 is then wiped off and the UV glue is cured using a photo curing device. The UV glue is again applied to fill the first and second chamfer grooves 150, 260 at the proximal and/or distal ends of the handle 10 and the UV glue is again cured using a photo-curing device to complete the sealing of the handle 10.

In summary, compared with the prior art, the handle 10, the medical device and the method for assembling the medical device provided by the utility model have the following advantages:

the handle 10 provided by the utility model comprises a first handle body 100 and a second handle body 200 which are meshed with each other; a first cavity 110 extending through the first handle body 100 in the axial direction is arranged on one side of the first handle body 100, which is close to the second handle body 200, a glue filling groove 120 is simultaneously or separately arranged at the proximal end and/or the distal end of the first handle body 100, the glue filling groove 120 is communicated with the first cavity 110, the depth of the glue filling groove 120 is larger than that of the first cavity 110, and the width of the glue filling groove 120 in the direction perpendicular to the axial direction is larger than the diameter of the first cavity 110, so that the glue filling groove 120 has two ends parallel to the axial direction; the second handle body 200 is provided with a second cavity 210 extending through the second handle body 200 in an axial direction and disposed corresponding to the first cavity 110 on a side near the first handle body 100, the first cavity 110 and the second cavity 210 together form an accommodating space for accommodating the needle tube 20, a pair of glue overflow bosses 220 matched with the glue filling groove 120 are disposed at positions corresponding to the proximal end and/or the distal end of the second handle body 200 and the glue filling groove 120, and the glue overflow bosses 220 are distributed on two sides of the second cavity 210 and are matched with shapes of two ends of the glue filling groove 120. According to the utility model, the handle 10 is provided with the structure of the second handle body 200 of the first handle body 100 which are meshed with each other, and the first handle body 100 is provided with the glue filling groove 120 communicated with the first cavity 110, so that when the handle 10 and the needle tube 20 are assembled, glue can be firstly filled into the first cavity 110 and the glue filling groove 120, and the needle tube 20 can be placed in the second cavity 210 of the second handle body 200; then insert the glue overflow boss 220 into the corresponding glue filling slot 120, glue in the glue filling slot 120 is overflowed due to extrusion of the glue overflow boss 220, so as to cover a gap between the glue filling slot 120 and the glue overflow boss 220, meanwhile, glue in the first cavity 110 is overflowed due to extrusion of the needle tube 20, so as to cover a gap between the accommodating space and the needle tube 20, and after solidification is performed by adopting solidification equipment, the needle tube 20 and the handle 10 can be firmly fixed together, so that torque at a joint of the handle 10 and the needle tube 20 can meet requirements. Therefore, when the handle 10 provided by the utility model is matched with the needle tube 20, the connection firmness between the needle tube 20 and the handle 10 can be improved, so that the problem that the needle tube 20 falls off from the handle 10 in the process of rotating or pulling the needle tube 20 by an operator can be effectively prevented.

Since the medical device and the method for assembling the medical device according to the present utility model are the same as the handle 10 according to the present utility model, the medical device and the method for assembling the medical device according to the present utility model have all the advantages of the handle 10 according to the present utility model, and therefore the beneficial effects of the medical device and the method for assembling the medical device according to the present utility model will not be described in detail.

The above description is only illustrative of the preferred embodiments of the present utility model and is not intended to limit the scope of the present utility model, and any alterations and modifications made by those skilled in the art based on the above disclosure shall fall within the scope of the present utility model. It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, the present utility model is intended to include such modifications and alterations insofar as they come within the scope of the utility model or the equivalents thereof.

Claims (14)

1. A handle, characterized by comprising a first handle body and a second handle body which are meshed with each other;

A first cavity extending in the axial direction and penetrating through the first handle body is formed in one side, close to the second handle body, of the first handle body, and a glue filling groove is formed in the proximal end and/or the distal end of the first handle body simultaneously or independently, the glue filling groove is communicated with the first cavity, the depth of the glue filling groove is larger than that of the first cavity, and the width of the glue filling groove in the direction perpendicular to the axial direction is larger than the diameter of the first cavity, so that the glue filling groove is provided with two ends parallel to the axial direction;

the utility model discloses a glue filling device, including first handle body, second handle body, first handle body, second handle body, first handle body is close to one side of first handle body is equipped with runs through the axial extension of second handle body and with the second cavity that the first cavity corresponds to set up, first cavity with the second cavity constitutes the accommodation space that is used for holding the needle tubing jointly, the proximal end and/or the distal end of second handle body with the position that the glue filling groove corresponds is equipped with a pair of glue overflow boss of glue filling groove matched with, glue overflow boss divide to list in the both sides of second cavity, and with the shape phase-match of two tip in glue filling groove.

2. The handle of claim 1, wherein a distance between two glue overflow ledges of each pair of glue overflow ledges is equal to a diameter of the second cavity.

3. The handle according to claim 1, wherein the glue filling groove comprises a first glue filling groove body and a second glue filling groove body which are communicated with each other, a step is formed at the joint of the first glue filling groove body and the second glue filling groove body, the first glue filling groove body is arranged close to the second handle body, and the width of the first glue filling groove body is larger than that of the second glue filling groove body; each glue overflow boss comprises a first table body and a second table body which are respectively parallel to the axial extension, the connecting parts of the first table body and the second table body form a step shape, and the first table body is close to the first handle body.

4. The handle according to claim 1, wherein a clamping groove is formed in one side, close to the second handle, of the first handle, and a clamping piece matched with the clamping groove is correspondingly arranged on one side, close to the first handle, of the second handle.

5. The handle of claim 4, wherein the clamping groove comprises a first groove and a second groove which are communicated with each other, the first groove is arranged close to the second handle body, the first groove comprises two sub grooves arranged on two sides of the first cavity, the sub grooves are communicated with the second groove, and the clamping piece comprises two buckles correspondingly arranged on two sides of the second cavity.

6. The handle of claim 5, wherein both sides of the second groove are each provided with a corresponding sub-groove extending in a direction away from the axis of the first cavity, such that a first overlap surface for overlapping the buckle can be formed between the second groove and the sub-groove.

7. The handle of claim 6, wherein the clasp comprises a clasp body and a clasp extending parallel to the axial direction, respectively, the clasp being interconnected and forming a hooked profile, the clasp being disposed proximate the first handle, a side of the clasp distal from the axis of the second cavity extending relative to the clasp body in a direction distal from the axis of the second cavity to form a second overlap surface between the clasp body and the clasp.

8. The handle of claim 7, wherein an inner wall of a side of the sub-groove remote from the axis of the first cavity is inclined at an angle of 10 ° to 60 °.

9. The handle of claim 6, wherein the second groove is disposed through both radial ends of the first handle body.

10. The handle according to claim 1, wherein a plurality of guide grooves are formed in one side, close to the second handle, of the first handle body, the guide grooves are distributed on two sides of the first cavity, a plurality of guide columns are correspondingly formed in one side, close to the first handle, of the second handle body, and the guide grooves are matched with the guide columns one by one.

11. The handle of claim 10, wherein an inner diameter of the guide groove is gradually reduced in a depth direction, and an inner diameter of an end of the guide groove near the second handle body is larger than an inner diameter of an end far from the second handle body, an outer diameter of the guide post is gradually reduced, and an outer diameter of an end of the guide post near the first handle body is smaller than an outer diameter of an end far from the first handle body.

12. The handle of claim 1, wherein a plurality of limiting members are provided on an inner wall of the glue overflow boss to enable the second handle body to be in interference fit with the needle cannula.

13. The handle according to claim 1, wherein the proximal and/or distal end of the first handle body is provided with a first chamfer groove, and the proximal and/or distal end of the second handle body is correspondingly provided with a second chamfer groove cooperating with the first chamfer groove.

14. A medical device comprising a needle cannula and a handle according to any one of claims 1 to 13.

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