CN117137552A - Connecting sleeve and suturing apparatus - Google Patents

Abstract

The invention provides a connecting sleeve and a suturing apparatus, wherein the connecting sleeve comprises a hollow cylinder, the proximal end of the cylinder is used for being connected with a suture, and the distal end of the cylinder is used for being connected with a suturing needle: the distal end of the barrel is provided with a first opening, and the distal end of the barrel is provided with at least one first clamping part along the circumferential direction of the distal end of the barrel, wherein the first clamping part is used for being clamped with the needle head of the suture needle. The suture instrument comprises a suture needle, a suture thread and the connecting sleeve, wherein the suture needle is provided with a needle head, a first clamping groove matched with the first clamping part is formed in the circumference of the needle head, and the suture thread is connected with the proximal end of the cylinder body. The invention can realize the stable connection between the suture needle and the suture thread.

Description

Connecting sleeve and suturing apparatus

Technical Field

The invention relates to the technical field of medical instruments, in particular to a connecting sleeve and a suturing instrument.

Background

The application range of the suture instrument and the wide range thereof are developed, and the suture instrument is fully applied and has good effects in the operations of a plurality of clinical departments such as orthopaedics, gastroenterology, hepatobiliary surgery, neurosurgery, vascular surgery, obstetrics and the like. At present, minimally invasive suture operations generally use suture instruments to perform needle threading, and the intra-operative threading process is particularly important.

In the prior art, the suture needle head end is directly connected with the suture thread, and the suture thread can not be firmly fixed on the suture needle by the mode, so that the suture thread is easy to fall off from the suture needle in the suture process of the suture needle, the suture work after operation is affected, and the actual requirement is difficult to meet.

It should be noted that the information disclosed in this background section is only for enhancement of understanding of the general background of the invention 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 invention aims to provide a connecting sleeve and a suture instrument, which can realize stable connection between a suture needle and a suture thread.

To achieve the above object, the present invention provides a connection sleeve for connecting a suture needle and a suture, the connection sleeve comprising a hollow cylinder, a proximal end of the cylinder being adapted to be connected to the suture, a distal end of the cylinder being adapted to be connected to the suture needle: the distal end of the barrel is provided with a first opening, and the distal end of the barrel is provided with at least one first clamping part along the circumferential direction of the distal end of the barrel, wherein the first clamping part is used for being clamped with the needle head of the suture needle.

Optionally, the first clamping portion is a barb structure extending towards the proximal end of the barrel.

Optionally, the wall of the distal end of the barrel is provided with at least one first notch corresponding to the first clamping parts one by one, and the proximal end of the first clamping part extends into the distal end of the barrel through the corresponding first notch.

Optionally, the proximal end of the barrel has a second opening, and the proximal end of the barrel is provided with at least one second clamping portion along its circumference for clamping into the suture thread.

Optionally, the second clamping portion is a barb structure extending towards the distal end of the barrel.

Optionally, the wall of the proximal end of the barrel is provided with at least one second notch corresponding to the second clamping parts one by one, and the proximal end of the second clamping part extends into the proximal end of the barrel through the corresponding second notch.

Optionally, the proximal end of the barrel is provided with a hollow necking section coaxially arranged with the barrel, an inner cavity of the necking section is communicated with an inner cavity of the barrel, the inner diameter and the outer diameter of the necking section are gradually reduced along the direction from the distal end to the proximal end, and the proximal end of the necking section is provided with a third opening.

Optionally, the proximal end of the barrel has a second opening, and the inside of the proximal end of the barrel is provided with a circumferentially arranged step portion, the step portion extends to the proximal end face of the barrel, and the step portion protrudes towards the axis of the barrel, and the inner diameter of the step portion is smaller than the inner diameter of the barrel.

Optionally, the proximal end of the barrel has a connecting rod coaxially disposed therewith such that the proximal end of the barrel is closed, the connecting rod being provided with a connecting feature disposed along an axial extension thereof.

Optionally, the proximal end of the barrel has a second opening, and an internal thread extending axially along the barrel is provided inside the proximal end of the barrel.

Optionally, the proximal end of the barrel is provided with a second opening, and a fastening groove is formed in the proximal end of the barrel, a flare section is formed in the proximal end of the fastening groove, and the inner diameter of the flare section gradually increases along the direction from the distal end to the proximal end of the flare section.

In order to achieve the above object, the present invention further provides a suturing apparatus, which includes a suturing needle, a suture thread and the connecting sleeve described above, wherein the suturing needle has a needle head, the needle head is provided with a first clamping groove along its circumference, which is matched with the first clamping portion, and the suture thread is connected with the proximal end of the barrel.

Optionally, one end of the needle is provided with a conical portion, and a diameter of the conical portion away from the first clamping groove is smaller than a diameter of the conical portion close to the first clamping groove.

Optionally, one end of the suture thread for connection to the cylinder has a roughened section formed by surface roughening treatment.

Optionally, one end of the suture thread, which is used for being connected with the cylinder, is provided with a spherical part, and the spherical part is inserted into the proximal end of the cylinder.

Optionally, one end of the suture thread, which is used for being connected with the cylinder body, is provided with a second clamping groove which is arranged in a circumferential direction, and the second clamping groove is arranged towards the axial line of the suture thread in a recessed way.

Optionally, the suture is of a hollow structure, and a filler is arranged in one end of the suture, which is used for being connected with the cylinder.

Optionally, the suture line is a central structure, the suture instrument further comprises a first fastener, the first fastener comprises a head part and a main body part which are coaxially connected along the direction from the distal end to the proximal end, the diameter of the head part is larger than that of the main body part, the head part is connected with a step part positioned in the proximal end of the cylinder body, the main body part is inserted into the suture line, and the main body part is provided with a second external thread which is axially extended and arranged along the main body part.

Optionally, the suture line is hollow structure, the suture instrument still includes the second fastener, the second fastener is including coaxial first connecting portion and the second connecting portion that links to each other along its distal end to the direction of proximal end, the diameter of first connecting portion is greater than the diameter of second connecting portion, first connecting portion is equipped with the third external screw thread that extends along its axial and sets up, the third external screw thread with the internal thread looks adaptation in the proximal end of barrel, the second connecting portion peg graft in the suture line, just the second connecting portion is equipped with the fourth external screw thread that extends along its axial and sets up.

Optionally, the suture line is hollow structure, the suture instrument still includes the third fastener, the third fastener is including coaxial continuous elasticity buckle portion and third connecting portion along its distal end to the direction of proximal end, the diameter of elasticity buckle portion is greater than the diameter of third connecting portion, elasticity buckle portion with buckle groove looks joint in the proximal end of barrel, third connecting portion peg graft in the suture line, just third connecting portion are equipped with the fifth external screw thread that sets up along its axial extension.

Compared with the prior art, the connecting sleeve and the suturing apparatus provided by the invention have the following advantages:

The invention provides a connecting sleeve which comprises a hollow barrel body, wherein the proximal end of the barrel body is used for being connected with a suture line, and the distal end of the barrel body is used for being connected with a suture needle: the distal end of the barrel is provided with a first opening, and the distal end of the barrel is provided with at least one first clamping part along the circumferential direction of the distal end of the barrel, wherein the first clamping part is used for being clamped with the needle head of the suture needle. From this, through with the suture needle with the distal end of adapter sleeve links to each other, through with the suture with adapter sleeve's proximal end links to each other, can realize the indirect connection of suture needle and suture, utilize adapter sleeve to further assist the connection of suture needle and suture, because area of contact between suture and the adapter sleeve is great, can effectively increase the fixity of being connected between adapter sleeve and the suture from this, thereby can realize the firm connection between suture needle and the suture, effectively prevent that suture and suture needle from breaking away from or the suture breaks away from mutually, the operator of being convenient for realizes long-range operation and realizes little wound operation. In addition, the connecting sleeve provided by the invention can be matched and connected with various sutures such as single-strand sutures, multi-strand sutures and hollow sutures, and can be suitable for target tissue suturing in various scenes.

Since the suturing apparatus provided by the present invention includes the connecting sleeve provided by the present invention, the suturing apparatus provided by the present invention has all the advantages of the connecting sleeve provided by the present invention, and the description of the advantages of the connecting sleeve provided by the present invention can be referred to above, so that the description of the advantages of the suturing apparatus provided by the present invention will not be repeated here.

Drawings

Fig. 1 is a schematic perspective view of a connecting sleeve according to a first embodiment of the present invention;

FIG. 2 is a cross-sectional view of a coupling sleeve according to a second embodiment of the present invention;

FIG. 3a is a schematic view of the structure of a single strand suture;

FIG. 3b is a schematic view of the structure of a multi-strand suture;

FIG. 3c is a schematic structural view of a hollow suture;

fig. 4 is a schematic perspective view of a connecting sleeve according to a second embodiment of the present invention;

FIG. 5 is a cross-sectional view of a coupling sleeve according to a second embodiment of the present invention;

fig. 6 is a schematic perspective view of a connecting sleeve according to a third embodiment of the present invention;

FIG. 7 is a cross-sectional view of a coupling sleeve according to a third embodiment of the present invention;

fig. 8 is a schematic perspective view of a connecting sleeve according to a fourth embodiment of the present invention;

FIG. 9 is a cross-sectional view of a fourth embodiment of the present invention providing a coupling sleeve;

fig. 10 is a schematic perspective view of a connecting sleeve according to a fifth embodiment of the present invention;

FIG. 11 is a cross-sectional view of a fifth embodiment of the present invention providing a coupling sleeve;

fig. 12 is a schematic perspective view of a connecting sleeve according to a sixth embodiment of the present invention;

FIG. 13 is a cross-sectional view of a coupling sleeve according to a sixth embodiment of the present invention;

FIG. 14 is a schematic view of an application scenario of a suturing apparatus according to an embodiment of the present invention;

FIG. 15 is a schematic view of a portion of a suturing apparatus provided in accordance with a first embodiment of the present invention;

FIG. 16 is a schematic view of a portion of a suturing apparatus provided in accordance with a second embodiment of the present invention;

FIG. 17 is a schematic view of a portion of a suturing apparatus according to a third embodiment of the present invention;

FIG. 18 is a schematic view of a portion of a suturing apparatus according to a fourth embodiment of the present invention;

FIG. 19 is a schematic view of a portion of a suturing apparatus according to a fifth embodiment of the present invention;

FIG. 20 is a schematic view of a portion of a suturing apparatus according to a sixth embodiment of the present invention;

FIG. 21 is a schematic view of a portion of a suturing apparatus according to a seventh embodiment of the present invention;

FIG. 22 is a schematic view of a portion of a suturing apparatus according to an eighth embodiment of the present invention;

FIG. 23 is a schematic view of a portion of a suturing apparatus according to a ninth embodiment of the present invention;

FIG. 24 is a schematic view of a portion of a suturing apparatus according to a tenth embodiment of the present invention.

Wherein, the reference numerals are as follows:

a connecting sleeve-100; a cylinder-110; a first clamping part-111; a first notch-112; a second opening-113; a second clamping part-114; second notch-115; a necking section-120; a third opening-121; a step portion-116; a connecting rod-130; -a connection feature-131; -117 internal thread; snap-fit groove-118; horn mouth section-1181;

suture needle-200; needle-210; a first clamping groove-211; a taper-212;

suture-300; rough segment-310; spherical portion-320; a second clamping groove-330; filler-340;

a first fastener-400; head-410; a main body part-420;

a second fastener-500; a first connection portion-510; a second connection portion-520; a third fastener-600; an elastic snap-fit portion-610; a third connection portion-620;

target tissue-710, target suture site-720; glue-730.

Detailed Description

The connecting sleeve and the suturing apparatus according to the invention are described in further detail below with reference to the drawings and the detailed description. The advantages and features of the present invention 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 invention. For a better understanding of the invention 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 invention, 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 invention. Specific design features of the invention 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 invention, 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 invention 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 invention. Meanwhile, in the description of the present invention, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrated; 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 invention will be understood in specific cases by those of ordinary skill in the art. Furthermore, in the present invention, 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.

The core idea of the invention is to provide a connecting sleeve and a suturing apparatus, which can realize a stable connection between a suturing needle and a suturing thread. It should be noted that, as will be understood by those skilled in the art, the term "proximal" herein refers to an end proximal to the operator, and the term "distal" refers to an end distal to the operator (i.e., an end proximal to the target tissue).

In order to achieve the above-mentioned idea, the present invention provides a connecting sleeve for connecting a suture needle and a suture, please refer to fig. 1 and fig. 2, wherein fig. 1 is a schematic perspective view of a connecting sleeve according to a first embodiment of the present invention; fig. 2 is a cross-sectional view of a coupling sleeve according to a second embodiment of the present invention. As shown in fig. 1 and 2, the coupling sleeve 100 includes a hollow cylinder 110, a proximal end of the cylinder 110 being adapted to be coupled to the suture thread 300 (see fig. 3a to 3 c), and a distal end of the cylinder 110 being adapted to be coupled to the suture needle 200 (see fig. 14): the distal end of the barrel 110 has a first opening, and at least one first engaging portion 111 for engaging with the needle 210 of the suture needle 200 is provided in the distal end of the barrel 110 along the circumferential direction thereof. Therefore, by connecting the suture needle 200 with the distal end of the connection sleeve 100, and connecting the suture thread 300 with the proximal end of the connection sleeve 100, indirect connection of the suture needle 200 and the suture thread 300 can be achieved, connection of the suture needle 200 and the suture thread 300 is further assisted by the connection sleeve 100, and due to the fact that the contact area between the suture thread 300 and the connection sleeve 100 is large, connection fixation between the connection sleeve 100 and the suture thread 300 can be effectively increased, stable connection between the suture needle 200 and the suture thread 300 can be achieved, separation of the suture thread 300 and the suture needle 200 or breakage of the suture thread 300 can be effectively prevented, and long-distance operation and micro-wound operation can be conveniently achieved by an operator. In addition, the connecting sleeve 100 provided by the invention can be matched and connected with various sutures 300 such as a single-strand suture 300 (shown in fig. 3 a), a multi-strand suture 300 (shown in fig. 3 b), a hollow suture 300 (shown in fig. 3 c) and the like, and can be suitable for suturing target tissues 710 in various scenes.

It should be noted that, as will be understood by those skilled in the art, the specific number of the first clamping portions 111 may be set according to the specific situation, and the number of the first clamping portions 111 may be 1, 2 or more. In some embodiments, the number of the first clamping portions 111 is plural, and the plural first clamping portions 111 are uniformly disposed along the distal circumferential direction of the barrel 110. Thus, the stability of the connection between the suture needle 200 and the connection sleeve 100 can be improved.

In some embodiments, the first clamping portion 111 is disposed inside the distal end of the barrel 110, so as to improve the penetration smoothness of the connecting sleeve 100 in the target tissue 710 (see fig. 14) (i.e. improve the penetration smoothness of the joint between the suture needle 200 and the suture 300 in the target tissue 710), and avoid the connecting sleeve 100 from scratching the target tissue 710.

With continued reference to fig. 1 and 2, as shown in fig. 1 and 2, the first engaging portion 111 is a barb structure extending toward the proximal end of the barrel 110. Therefore, by setting the first clamping portion 111 to be in a barb structure, not only the head end of the suture needle 200 can be more conveniently clamped into the distal end of the barrel 110, but also the stable connection between the suture needle 200 and the connection sleeve 100 can be realized, and the suture needle 200 is effectively prevented from being separated from the connection sleeve 100.

Referring to fig. 1 and 2, as shown in fig. 1 and 2, at least one first notch 112 is disposed on a wall of the distal end of the barrel 110 and is in one-to-one correspondence with the first clamping portion 111, and a proximal end of the first clamping portion 111 extends into the distal end of the barrel 110 through the corresponding first notch 112. Therefore, the first clamping portion 111 with a barb structure can be conveniently processed in a cutting manner such as laser cutting, so that the processing technology of the connecting sleeve 100 provided by the invention is simplified, and the first clamping portion 111 can be ensured to have certain elasticity, so that the needle head 210 of the suture needle 200 can be more conveniently inserted into the distal end of the cylinder 110, and the clamping between the first clamping portion 111 and the needle head 210 of the suture needle 200 can be smoothly realized.

With continued reference to fig. 1 and 2, in the present embodiment, the proximal end of the barrel 110 has a second opening 113, and the proximal end of the barrel 110 is provided with at least one second clamping portion 114 along its circumference for clamping into the suture thread 300, as shown in fig. 1 and 2. Thus, with respect to the connection sleeve 100 provided in this embodiment, the end of the suture thread 300 for being connected to the cylinder 110 may be coated with glue 730 (see fig. 15), then inserted into the proximal end of the cylinder 110, and then the second clamping portion 114 is clamped into the suture thread 300 from the outside through a fixture, so that the suture thread 300 is firmly fixed to the proximal end of the cylinder 110, so as to further realize a stable connection between the suture needle 200 and the suture thread 300. In some embodiments, the second clamping portion 114 is disposed inside the proximal end of the barrel 110, so as to improve the smoothness of penetration of the connecting sleeve 100 in the target tissue 710 (i.e. improve the smoothness of penetration of the joint between the suture needle 200 and the suture 300 in the target tissue 710).

It should be noted that, as will be understood by those skilled in the art, the specific number of the second clamping portions 114 may be set according to the specific situation, and the number of the second clamping portions 114 may be 1, 2 or more. In some embodiments, the number of the second clamping portions 114 is plural, and the second clamping portions 114 are uniformly arranged along the proximal circumferential direction of the barrel 110. Thus, the stability of the connection between the suture thread 300 and the connection sleeve 100 can be further improved.

With continued reference to fig. 1 and 2, as shown in fig. 1 and 2, further, the second engaging portion 114 is a barb structure extending toward the distal end of the barrel 110. Therefore, by arranging the second clamping portion 114 into a barb structure, the second clamping portion 114 can be clamped into the suture thread 300 more conveniently, and the suture thread 300 and the connecting sleeve 100 can be firmly connected, so that the suture thread 300 is effectively prevented from being separated from the connecting sleeve 100.

With reference to fig. 1 and 2, as shown in fig. 1 and 2, further, at least one second notch 115 is provided on the wall of the proximal end of the barrel 110 and is in one-to-one correspondence with the second clamping portion 114, and the proximal end of the second clamping portion 114 extends into the proximal end of the barrel 110 through the corresponding second notch 115. Therefore, the second clamping portion 114 with a barb structure can be conveniently processed by cutting methods such as laser cutting, so that the processing technology of the connecting sleeve 100 provided by the invention is simplified, and the second clamping portion 114 can be ensured to have certain elasticity, so that the suture 300 can be more conveniently inserted into the proximal end of the cylinder 110, and the fixed connection between the suture 300 and the cylinder 110 can be smoothly realized.

Referring to fig. 4 and 5, fig. 4 is a schematic perspective view of a connecting sleeve 100 according to a second embodiment of the present invention; fig. 5 is a cross-sectional view of a coupling sleeve 100 according to a second embodiment of the present invention. As shown in fig. 4 and 5, the difference between the connection sleeve 100 provided in this embodiment and the connection sleeve 100 provided in the first embodiment is that, in this embodiment, the proximal end of the barrel 110 is provided with a hollow necking section 120 coaxially disposed with the proximal end of the barrel, the inner cavity of the necking section 120 is communicated with the inner cavity of the barrel 110, the inner diameter and the outer diameter of the necking section 120 are gradually reduced along the direction from the distal end to the proximal end, and the proximal end of the necking section 120 has a third opening 121. Therefore, with respect to the connecting sleeve 100 provided in this embodiment, one end of the suture thread 300, which is used to connect with the cylinder 110, may be clamped into the necking section 120, so that the suture thread 300 may be limited by the necking section 120, and the suture thread 300 is effectively prevented from being separated from the connecting sleeve 100. Compared with the connecting sleeve 100 provided by the first embodiment, the connecting sleeve 100 provided by the present embodiment may further simplify the connecting process between the suture thread 300 and the connecting sleeve 100 without coating the glue 730 on the suture thread 300. It should be noted that, as will be appreciated by those skilled in the art, in practical applications, one end of the suture thread 300 may be first snapped into the proximal end of the barrel 110 (the proximal end of the barrel 110 has not yet formed the necked-down section 120), and then the necked-down section 120 may be formed at the proximal end of the barrel 110 by a heat shrinkage process or the like, so as to firmly fix one end of the suture thread 300 in the barrel 110. In addition, by setting the outer diameter of the necked-down section 120 to be gradually reduced in the distal-to-proximal direction thereof, it is possible to more easily form the necked-down section 120 at the proximal end of the cylinder 110 by a heat shrinkage process or the like.

Referring to fig. 6 and fig. 7, fig. 6 is a schematic perspective view of a connecting sleeve 100 according to a third embodiment of the present invention; fig. 7 is a cross-sectional view of a connecting sleeve 100 according to a third embodiment of the present invention. As shown in fig. 6 and 7, in the present embodiment, the proximal end of the barrel 110 also has the second opening 113, and the difference between the connection sleeve 100 provided in the present embodiment and the connection sleeve 100 provided in the first embodiment is that, in the present embodiment, a circumferentially disposed step portion 116 is disposed inside the proximal end of the barrel 110, the step portion 116 extends to the proximal end surface of the barrel 110, and the step portion 116 is disposed to protrude toward the axis of the barrel 110, and the inner diameter of the step portion 116 is smaller than the inner diameter of the barrel 110 to form a step, and the outer diameter of the step portion is consistent with the outer diameter of the barrel 110. Thus, with respect to the connection sleeve 100 provided in this embodiment, a first fastener 400 (see fig. 21) such as a T-shaped screw provided in a T-shape may be inserted from the distal end of the cylinder 110, and the first fastener 400 may be pushed toward the proximal end of the cylinder 110 until the head 410 (see fig. 21) of the first fastener 400 abuts against the stepped portion 116, at this time, the main body 420 (see fig. 21) of the first fastener 400 passes through the second opening 113, then the glue 730 is coated on the main body 420, and then the hollow suture 300 is sleeved on the main body 420 coated with the glue 730, so that the suture 300 is firmly fixed to the proximal end of the connection sleeve 100.

With continued reference to fig. 8 and 9, fig. 8 is a schematic perspective view of a connecting sleeve 100 according to a fourth embodiment of the present invention; fig. 9 is a cross-sectional view of a connection sleeve 100 according to a fourth embodiment of the present invention. As shown in fig. 8 and 9, the present embodiment provides a connection sleeve 100 different from the connection sleeve 100 provided in the first embodiment in that, in the present embodiment, the proximal end of the barrel 110 has a connection rod 130 coaxially disposed therewith, such that the proximal end of the barrel 110 is closed, and the connection rod 130 is provided with a connection feature 131 extending along an axial direction thereof. Thus, with respect to the connection sleeve 100 provided in this embodiment, the suture thread 300 may be firmly fixed to the proximal end of the connection sleeve 100 by coating the glue 730 on the connection rod 130 and then sleeving the hollow suture thread 300 on the glue 730-coated connection rod 130. In some embodiments, the connecting feature 131 is a first external thread, so, by providing the connecting rod 130 with the first external thread (i.e. the connecting feature 131), the glue 730 may be also coated in the first external thread (i.e. the connecting feature 131), so as to increase the coating area of the glue 730, further increase the contact area between the surface of the suture thread 300 and the glue 730, and further increase the connection strength between the suture thread 300 and the connecting sleeve 100.

Referring to fig. 10 and 11, fig. 10 is a schematic perspective view of a connecting sleeve 100 according to a fifth embodiment of the present invention; fig. 11 is a cross-sectional view of a fifth embodiment of a coupling sleeve 100 according to the present invention. As shown in fig. 10 and 11, in this embodiment, the proximal end of the barrel 110 also has the second opening 113, and the difference between the connection sleeve 100 provided in this embodiment and the connection sleeve 100 provided in the first embodiment is that, in this embodiment, the inner portion of the proximal end of the barrel 110 is provided with an internal thread 117 extending along the axial direction thereof. Thus, with respect to the connection sleeve 100 provided in this embodiment, a second fastener 500 (see fig. 23) having an external thread at a distal end thereof may be inserted from the distal end of the cylinder 110 and screwed into the second fastener 500 toward the proximal end of the cylinder 110 until the external thread at the distal end of the second fastener 500 is screwed with the internal thread 117 and the proximal end of the second fastener 500 passes through the second opening 113, then the glue 730 is applied to the proximal end of the second fastener 500, and then the hollow suture 300 is sleeved on the proximal end of the second fastener 500 coated with the glue 730, thereby firmly fixing the suture 300 to the proximal end of the connection sleeve 100.

With continued reference to fig. 12 and 13, fig. 12 is a schematic perspective view of a connecting sleeve 100 according to a sixth embodiment of the present invention; fig. 13 is a cross-sectional view of a connecting sleeve 100 according to a sixth embodiment of the present invention. As shown in fig. 12 and 13, in the present embodiment, the proximal end of the barrel 110 also has the second opening 113, and the difference between the connection sleeve 100 provided in the present embodiment and the connection sleeve 100 provided in the first embodiment is that, in the present embodiment, the proximal end of the barrel 110 has the second opening 113, and the inside of the proximal end of the barrel 110 is provided with the snap groove 118. Thus, with respect to the connection sleeve 100 provided in this embodiment, the elastic fastening portion 610 (located at the distal end of the third fastener 600) of the third fastener 600 (see fig. 24) such as the fastening screw may be fastened into the fastening groove 118, then the proximal end of the third fastener 600 is coated with the glue 730, and the hollow suture thread 300 is sleeved on the proximal end of the third fastener 600 coated with the glue 730, so that the suture thread 300 is firmly fixed at the proximal end of the connection sleeve 100.

With continued reference to fig. 12 and 13, as shown in fig. 12 and 13, further, a flared section 1181 is provided at the proximal end of the latch slot 118, and the inside diameter of the flared section 1181 gradually increases along the direction from the distal end to the proximal end. Thus, by providing the flare segment 1181 at the proximal end of the locking groove 118, guiding can be performed, so that the elastic locking portion 610 of the third fastener 600 can be more conveniently locked into the locking groove 118.

Based on the same inventive concept, the present invention further provides a suturing apparatus, which includes a suturing needle 200, a suturing thread 300 and the connecting sleeve 100 according to any of the above embodiments, wherein the suturing needle 200 has a needle head 210, the needle head 210 is provided with a first clamping groove 211 along a circumferential direction thereof, which is matched with the first clamping portion 111, and the suturing thread 300 is connected with the proximal end of the cylinder 110. Because the suturing apparatus provided by the invention comprises the connecting sleeve 100, the suturing apparatus provided by the invention can realize indirect connection of the suturing needle 200 and the suturing thread 300 by connecting the suturing thread 300 with the distal end of the connecting sleeve 100 and connecting the suturing thread 300 with the proximal end of the connecting sleeve 100, and can effectively increase the connection fixation between the connecting sleeve 100 and the suturing thread 300 due to the large contact area between the suturing thread 300 and the connecting sleeve 100, thereby realizing stable connection between the suturing needle 200 and the suturing thread 300, effectively preventing the suturing thread 300 from being separated from the suturing needle 200 or the suturing thread 300 from being broken, and being convenient for operators to realize remote operation and micro-wound operation. In addition, since the first clamping portion 111 is disposed inside the cylinder 110, the smoothness of penetration of the connecting sleeve 100 into the target tissue 710 (i.e., the smoothness of penetration of the joint between the suture needle 200 and the suture thread 300 into the target tissue 710) can be improved, and the connecting sleeve 100 is prevented from scratching the target tissue 710. In addition, the connecting sleeve 100 provided by the invention can be matched and connected with various sutures 300 such as single-strand sutures 300, multi-strand sutures 300, hollow sutures 300 and the like, and can be suitable for target tissues 710 under various scenes.

It should be noted that, as those skilled in the art will appreciate, the suturing apparatus provided in the present invention further includes a driving mechanism for driving the suturing needle 200 to perform suturing motion, and a pushing mechanism for pushing the suturing needle 200 to a target suturing portion 720 (such as a lesion, a lesion or the like in a heart disease wound, a body cavity (such as an abdominal cavity), etc., see fig. 14), and reference may be made to related contents of the tissue closing apparatus known to those skilled in the art. It should be further noted that, as those skilled in the art can understand, the application scenario of the suturing apparatus provided by the present invention includes, but is not limited to, suturing of a foramen ovale, suturing of an atrial septum, suturing of an ventricular septum, suturing of an arterial and venous vessel wall, and suturing of a lesion or wound in a human cavity (such as an abdominal cavity).

Specifically, the suturing apparatus provided by the invention may include one suturing needle 200, or may include two suturing needles 200, where the number of connecting sleeves 100 included in the suturing apparatus is the same as the number of suturing needles 200. Fig. 14 is a schematic view of an application scenario of a suturing apparatus according to an embodiment of the present invention. As shown in fig. 14, when the suturing apparatus includes two suturing needles 200 and two coupling sleeves 100, one end of the suturing thread 300 is coupled to one of the suturing needles 200 through one of the coupling sleeves 100, and the other end of the suturing thread 300 is coupled to the other suturing needle 200 through the other coupling sleeve 100. When the suturing apparatus includes two suturing needles 200, both sides of the target suturing site 720 (e.g., an foramen ovale, a lesion of a heart disease, a lesion or a wound in a body cavity (e.g., an abdominal cavity), etc.) can be simultaneously sutured, and thus the suturing efficiency can be greatly improved.

The specific structure of the suturing apparatus provided by the present invention will be described below with reference to examples 1 to 10.

Example 1

Referring to FIG. 15, a schematic view of a portion of a suturing apparatus according to a first embodiment of the present invention is shown. As shown in fig. 15, the suturing apparatus provided by the present embodiment includes the connecting sleeve 100 provided by the first embodiment above, and the suture 300 may be a hollow suture 300, a single strand suture 300 (solid), or a plurality of strands of sutures 300 (each solid). The suturing apparatus provided by the present embodiment may be assembled by: the needle 210 of the suture needle 200 is clamped into the distal end of the cylinder 110 and is clamped with the first clamping portion 111, one end of the suture thread 300, which is used for being connected with the connecting sleeve 100, is coated with glue 730, is inserted into the proximal end of the cylinder 110, and then the second clamping portion 114 is clamped into the suture thread 300 from the outside through a fixture. In some embodiments, the end of the suture thread 300 for connection to the connection sleeve 100 may be flattened or un-twisted (for the multi-strand suture thread 300) prior to the application of the glue 730, to increase the application area of the glue 730, thereby further increasing the connection strength between the suture thread 300 and the connection sleeve 100.

With continued reference to fig. 15, as shown in fig. 15, an end of the needle 210 facing the connecting sleeve 100 is provided with a tapered portion 212, and a diameter of the tapered portion 212 away from the first clamping groove 211 is smaller than a diameter of the tapered portion 212 close to the first clamping groove 211. Therefore, the needle 210 of the suture needle 200 can be more conveniently clamped into the proximal end of the barrel 110, so that the first clamping groove 211 can be smoothly clamped with the first clamping portion 111, and after the two parts are clamped in the suture process, the suture needle can drag the whole connection sleeve 100 to drive the connection sleeve 100 and the suture thread 300 to pass through tissues together.

Example 2

Referring to FIG. 16, a schematic view of a portion of a suturing apparatus according to a second embodiment of the present invention is shown. As shown in fig. 16, the suturing apparatus provided in this embodiment also includes the connecting sleeve 100 provided in the first embodiment above, and the suture 300 may be a hollow suture, a single-strand suture or a multi-strand suture. The suture instrument provided in this embodiment is different from the suture instrument provided in the first embodiment in that in this embodiment, one end of the suture thread 300 for being connected to the cylinder 110 has a roughened section 310 formed by surface roughening treatment. Thus, by performing the surface roughening treatment on the end of the suture thread 300 for connecting with the cylinder 110, the contact area between the surface of the suture thread 300 and the glue 730 can be increased, thereby achieving the purpose of improving the connection strength between the suture thread 300 and the connection sleeve 100. The assembling process of the suturing apparatus provided in this embodiment is similar to that of the suturing apparatus provided in the first embodiment, and reference may be made to the description related to embodiment 1, which is not repeated here.

Example 3

Referring to FIG. 17, a schematic view of a portion of a suturing apparatus according to a third embodiment of the present invention is shown. As shown in fig. 17, the suturing apparatus provided in this embodiment also includes the connecting sleeve 100 provided in the first embodiment above, and the suturing thread 300 may be a hollow suturing thread 300, a single-strand suturing thread 300 or a multi-strand suturing thread 300. The difference between the suturing apparatus according to the present embodiment and the suturing apparatus according to the first embodiment is that in the present embodiment, a spherical portion 320 is disposed at an end of the suture thread 300 for being connected to the cylinder 110, and the spherical portion 320 is inserted into the proximal end of the cylinder 110. Therefore, by arranging the spherical portion 320 at one end of the suture thread 300, which is used for being connected with the cylinder 110, not only can the limit function be achieved to effectively prevent the suture thread 300 from being separated from the cylinder 110, but also the contact area between the surface of the suture thread 300 and the glue 730 can be increased, thereby achieving the purpose of improving the connection strength between the suture thread 300 and the connecting sleeve 100. In addition, the transition area formed by the spherical portion 320 may further provide a clamping space for the second clamping portion 114, so as to further facilitate the second clamping portion 114 to be clamped into the suture thread 300. Specifically, one end of the suture thread 300 for connection with the connection sleeve 100 may be molded into the ball 320 through injection molding or hot melting, etc. The assembling process of the suturing apparatus provided in this embodiment is similar to that of the suturing apparatus provided in the first embodiment, and reference may be made to the description related to embodiment 1, which is not repeated here.

Example 4

Referring to fig. 18, a schematic view of a portion of a suturing apparatus according to a fourth embodiment of the present invention is shown. As shown in fig. 18, the suturing apparatus provided in this embodiment also includes the connecting sleeve 100 provided in the first embodiment above, and the suturing thread 300 may be a hollow suturing thread 300, a single-strand suturing thread 300 or a multi-strand suturing thread 300. The difference between the suturing apparatus provided in this embodiment and the suturing apparatus provided in the first embodiment is that in this embodiment, the end of the suture thread 300 for connecting with the cylinder 110 has a second clamping groove 330 disposed circumferentially, and the second clamping groove 330 is disposed concavely toward the axis of the suture thread 300. Thus, by providing the second engaging groove 330 at the end of the suture thread 300 for connecting to the cylinder 110, the suture thread 300 can be engaged with the cylinder 110 by engaging the second engaging portion 114 into the second engaging groove 330. Further, in order to enhance the connection strength between the suture 300 and the connection sleeve 100, the second clamping groove 330 is further filled with glue 730, so as to effectively prevent the second clamping portion 114 from being separated from the second clamping groove 330, thereby effectively preventing the suture 300 from being separated from the connection sleeve 100. The assembling process of the suturing apparatus provided in this embodiment is similar to that of the suturing apparatus provided in the first embodiment, and reference may be made to the description related to embodiment 1, which is not repeated here.

Example 5

Referring to fig. 19, a schematic view of a part of a suture apparatus according to a fifth embodiment of the present invention is shown. As shown in fig. 19, the difference between the suturing apparatus provided in this embodiment and the suturing apparatus provided in the first embodiment is that in this embodiment, the connecting sleeve 100 is the connecting sleeve 100 provided in the second embodiment, and one end of the suture thread 300 for connecting with the cylinder 110 is provided with a ball portion 320, and the ball portion 320 is inserted into the proximal end of the cylinder 110. Because the proximal end of the connecting sleeve 100 in the suturing apparatus provided by the embodiment is provided with the necking section 120, the spherical portion 320 can be effectively prevented from being separated from the cylinder 110 by the necking section 120, and the suturing thread 300 can be effectively prevented from being separated from the cylinder 110, so as to ensure the connection stability of the suturing thread 300 and the connecting sleeve 100. Specifically, one end of the suture thread 300 may be molded into a ball shape by injection molding or hot melting to form the ball-shaped portion 320, then the ball-shaped portion 320 is snapped into the proximal end of the barrel 110, and then the reduced section 120 is formed at the proximal end of the barrel 110 by a heat shrinkage process or the like, so that the ball-shaped portion 320 may be firmly fixed in the barrel 110. It should be noted that, as will be understood by those skilled in the art, the needle 210 of the suture needle 200 may be first snapped into the distal end of the barrel 110, then the reduced section 120 may be formed at the proximal end of the barrel 110 by a heat shrinkage process or the like, or the reduced section 120 may be formed at the proximal end of the barrel 110 by a heat shrinkage process or the like, and then the needle 210 of the suture needle 200 may be snapped into the distal end of the barrel 110. It should be further noted that, as will be appreciated by those skilled in the art, the suture 300 in the suturing apparatus provided in this embodiment may be a hollow suture 300, a single strand suture 300 or a plurality of strands of sutures 300.

Example 6

Referring to FIG. 20, a schematic view of a portion of a suturing apparatus according to a sixth embodiment of the present invention is shown. As shown in fig. 20, the suturing apparatus provided in this embodiment also includes the connecting sleeve 100 provided in the second embodiment, and the suturing apparatus provided in this embodiment is different from the suturing apparatus provided in the fifth embodiment in that, in this embodiment, the suturing thread 300 is of a hollow structure (i.e., the suturing thread 300 is a hollow suturing thread 300), and a filler 340 is provided inside an end of the suturing thread 300 for connecting with the cylinder 110. Thus, by providing the filler 340 in the end of the hollow suture 300 for connection with the cylinder 110, the strength of the end of the suture 300 for connection with the cylinder 110 can be improved, and deformation thereof can be effectively prevented, so that the suture 300 can be effectively prevented from being detached from the connection sleeve 100. Specifically, the filler 340 may be inserted into one end of the suture 300, then the end of the suture 300 filled with the filler 340 may be clamped into the proximal end of the barrel 110, and then the reduced section 120 may be formed at the proximal end of the barrel 110 by a heat shrinkage process or the like, so that the end of the suture 300 filled with the filler 340 may be firmly fixed in the barrel 110. It should be noted that, as will be understood by those skilled in the art, the needle 210 of the suture needle 200 may be first snapped into the distal end of the barrel 110, then the reduced section 120 may be formed at the proximal end of the barrel 110 by a heat shrinkage process or the like, or the reduced section 120 may be formed at the proximal end of the barrel 110 by a heat shrinkage process or the like, and then the needle 210 of the suture needle 200 may be snapped into the distal end of the barrel 110.

Further, the filler 340 may be a metal material or a polymer material, and the connection mode between the filler 340 and the inner wall of the suture thread 300 may be an adhesive or an interference fit. In some embodiments, the filler 340 is provided with external threads extending axially therealong. Thus, by providing external threads on the filler 340, the contact area between the surface of the filler 340 and the glue 730 can be increased, thereby enhancing the connection strength between the filler 340 and the inner wall of the suture thread 300, so as to ensure that the filler 340 can be firmly fixed in the suture thread 300.

Example 7

Referring to FIG. 21, a schematic view of a portion of a suturing apparatus according to a seventh embodiment of the present invention is shown. As shown in fig. 21, the suture instrument provided in this embodiment is different from the suture instrument provided in the first embodiment in that, in this embodiment, the connection sleeve 100 is the connection sleeve 100 provided in the third embodiment above; the suture 300 is a central structure (i.e. the suture 300 is a hollow suture 300), the suture apparatus further comprises a first fastener 400, the first fastener 400 comprises a head 410 and a main body 420 coaxially connected along the direction from the distal end to the proximal end, the diameter of the head 410 is larger than that of the main body 420, the head 410 is connected with the step 116 in the proximal end of the cylinder 110, the main body 420 is inserted into the suture 300, and the main body 420 is provided with a second external thread (not labeled in the figure) extending along the axial direction. Thus, by attaching the head portion 410 of the first fastener 400 to the stepped portion 116 (which may be, in particular, an interference or adhesive connection), the body portion 420 is attached to the suture 300 (which may be, in particular, an adhesive connection), thereby securely attaching the suture 300 to the connecting sleeve 100. In addition, by providing the second external screw thread on the body part 420, the contact area between the surface of the body part 420 and the glue 730 can be increased, so that the connection strength between the body part 420 and the inner wall of the suture thread 300 can be enhanced, thereby ensuring that the suture thread 300 can be firmly fixed on the body part 420.

Specifically, the first fastener 400 may be inserted from the distal end of the barrel 110, and the first fastener 400 may be pushed toward the proximal end of the barrel 110 until the head 410 of the first fastener 400 abuts against the stepped portion 116, at which time the main body 420 passes through the second opening 113, and then the glue 730 is applied to the main body 420, and then the hollow suture thread 300 is sleeved on the main body 420 coated with the glue 730, so that the suture thread 300 is firmly fixed to the proximal end of the connection sleeve 100; needle 210 of needle 200 is then snapped into the distal end of barrel 110.

Example 8

Referring to FIG. 22, a schematic view of a portion of a suturing apparatus according to an eighth embodiment of the present invention is shown. As shown in fig. 22, the difference between the suturing apparatus provided in this embodiment and the suturing apparatus provided in the first embodiment is that in this embodiment, the connecting sleeve 100 is the connecting sleeve 100 provided in the fourth embodiment, and the suturing thread 300 is a central structure (i.e., the suturing thread 300 is a hollow suturing thread 300). Thus, the suture thread 300 may be firmly fixed to the proximal end of the connection sleeve 100 by coating the glue 730 on the connection rod 130 of the connection sleeve 100 and then sleeving the hollow suture thread 300 on the glue 730-coated connection rod 130. It should be noted that, in some embodiments, the needle 210 of the suture needle 200 may be first snapped into the distal end of the barrel 110, and then the suture thread 300 may be fixed to the connecting rod 130 of the connecting sleeve 100 by adhesive, as will be appreciated by those skilled in the art. In other embodiments, the suture thread 300 may be fixed to the connecting rod 130 of the connecting sleeve 100 by adhesive, and then the needle head 210 of the suture needle 200 may be locked into the distal end of the barrel 110.

Example 9

Referring to FIG. 23, a schematic partial view of a suture instrument according to a ninth embodiment of the present invention is shown. As shown in fig. 23, the difference between the suturing apparatus provided in this embodiment and the suturing apparatus provided in the first embodiment is that in this embodiment, the connecting sleeve 100 is the connecting sleeve 100 provided in the fifth embodiment, the suture thread 300 is of a hollow structure, the suturing apparatus further includes a second fastener 500, the second fastener 500 includes a first connecting portion 510 and a second connecting portion 520 coaxially connected along a distal end to a proximal end direction thereof, the diameter of the first connecting portion 510 is greater than that of the second connecting portion 520, the first connecting portion 510 is provided with a third external thread (not labeled in the drawing) extending along an axial direction thereof, the third external thread is matched with the internal thread 117 in the proximal end of the barrel 110, the second connecting portion 520 is inserted into the suture thread 300, and the second connecting portion 520 is provided with a fourth external thread (not labeled in the drawing) extending along an axial direction thereof. Thus, by screwing the first connecting portion 510 of the second fastening member 500 having a larger diameter to the proximal end of the cylinder 110, the hollow suture 300 is sleeved on the second connecting portion 520 of the second fastening member 500 having a smaller diameter by the glue 730, so that the suture 300 can be firmly fixed to the connection sleeve 100. In addition, by providing the fourth external thread on the second connection part 520, the contact area between the surface of the second connection part 520 and the glue 730 can be increased, so that the connection strength between the second connection part 520 and the inner wall of the suture thread 300 can be enhanced, thereby ensuring that the suture thread 300 can be firmly fixed on the second connection part 520.

Specifically, the second fastener 500 may be inserted from the distal end of the barrel 110 and screwed into the second fastener 500 toward the proximal end until the first connection portion 510 of the second fastener 500 is screwed with the internal thread 117 of the proximal end of the barrel 110, the second connection portion 520 of the second fastener 500 passes through the second opening 113, the second connection portion 520 is coated with glue 730, and then the hollow suture thread 300 is sleeved on the second connection portion 520 coated with the glue 730, thereby firmly fixing the suture thread 300 to the proximal end of the connection sleeve 100; needle 210 of needle 200 is then snapped into the distal end of barrel 110.

Example 10

Referring to FIG. 24, a schematic view of a portion of a suturing apparatus according to a tenth embodiment of the present invention is shown. As shown in fig. 24, the difference between the suturing apparatus provided in this embodiment and the suturing apparatus provided in the first embodiment is that in this embodiment, the connecting sleeve 100 is the connecting sleeve 100 provided in the sixth embodiment, the suture thread 300 is of a hollow structure, the suturing apparatus further includes a third fastener 600, the third fastener 600 includes an elastic fastening portion 610 and a third connecting portion 620 coaxially connected along a distal-to-proximal direction thereof, the diameter of the elastic fastening portion 610 is greater than that of the third connecting portion 620, the elastic fastening portion 610 is engaged with the fastening groove 118 in the proximal end of the barrel 110, the third connecting portion 620 is inserted into the suture thread 300, and the third connecting portion 620 is provided with a fifth external thread (not labeled in the drawing) extending axially along the third connecting portion 620. Thus, by engaging the larger diameter elastic engaging portion 610 of the third fastening member 600 with the engaging groove 118 in the proximal end of the barrel 110, the hollow suture thread 300 is sleeved on the smaller diameter third connecting portion 620 of the third fastening member 600 by the glue 730, so that the suture thread 300 can be firmly fixed on the connecting sleeve 100. In addition, by providing the fifth external thread on the third connection part 620, the contact area between the surface of the third connection part 620 and the glue 730 can be increased, so that the connection strength between the third connection part 620 and the inner wall of the suture thread 300 can be enhanced, thereby ensuring that the suture thread 300 can be firmly fixed on the third connection part 620.

Specifically, the elastic fastening portion 610 of the third fastening member 600 may be fastened into the fastening groove 118 along the proximal end of the barrel 110, then the third connecting portion 620 of the third fastening member 600 is coated with glue 730, and the hollow suture 300 is sleeved on the third connecting portion 620 coated with the glue 730, thereby firmly fixing the suture 300 to the proximal end of the connecting sleeve 100. It should be noted that, in some embodiments, the needle 210 of the suture needle 200 may be first snapped into the distal end of the barrel 110, and then the elastic clipping portion 610 of the third fastener 600 may be snapped into the clipping groove 118 along the proximal end of the barrel 110; in other embodiments, the needle 210 of the needle 200 may be snapped into the distal end of the barrel 110 after the hollow suture 300 is sleeved over the third connection 620 coated with glue 730.

In summary, compared with the prior art, the connecting sleeve 100 and the suturing apparatus provided by the present invention have the following advantages:

by connecting the suture needle 200 with the distal end of the connecting sleeve 100 provided by the invention, and connecting the suture thread 300 with the proximal end of the connecting sleeve 100, indirect connection of the suture needle 200 and the suture thread 300 can be realized, and the connecting sleeve 100 is utilized to further assist connection of the suture needle 200 and the suture thread 300, as the contact area between the suture thread 300 and the connecting sleeve 100 is larger, the connection fixation between the connecting sleeve 100 and the suture thread 300 can be effectively increased, so that stable connection between the suture needle 200 and the suture thread 300 can be realized, separation of the suture thread 300 and the suture needle 200 or fracture of the suture thread 300 can be effectively prevented, and the long-distance operation and the micro-wound operation can be conveniently realized by operators. In addition, by providing the first engagement portion 111 inside the distal end of the cylinder 110, the smoothness of penetration of the connection sleeve 100 into the target tissue 710 (i.e., the smoothness of penetration of the joint between the suture needle 200 and the suture thread 300 into the target tissue 710) can be improved, and the connection sleeve 100 is prevented from scratching the target tissue 710. In addition, the connecting sleeve 100 provided by the invention can be matched and connected with various sutures 300 such as single-strand sutures 300, multi-strand sutures 300, hollow sutures 300 and the like, and can be suitable for target tissues 710 under various scenes.

It should be noted that in the description of the present specification, descriptions of terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the various embodiments or examples described in this specification and the features of the various embodiments or examples may be combined and combined by those skilled in the art without contradiction.

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

Claims (20)

1. A connecting sleeve for connecting a suture needle and a suture thread, characterized in that the connecting sleeve comprises a hollow barrel, a proximal end of the barrel is used for being connected with the suture thread, and a distal end of the barrel is used for being connected with the suture needle; the distal end of the barrel is provided with a first opening, and the distal end of the barrel is provided with at least one first clamping part along the circumferential direction of the distal end of the barrel, wherein the first clamping part is used for being clamped with the needle head of the suture needle.

2. The connector sleeve of claim 1, wherein the first snap-fit feature is a barb structure extending toward the proximal end of the barrel.

3. The connecting sleeve according to claim 2, wherein the wall of the distal end of the barrel is provided with at least one first notch arranged in one-to-one correspondence with the first clamping portion, and the proximal end of the first clamping portion extends into the interior of the distal end of the barrel through the corresponding first notch.

4. The connector sleeve of claim 1, wherein the proximal end of the barrel has a second opening and wherein the proximal end of the barrel is provided with at least one second detent along its circumference for snapping into the suture.

5. The connector sleeve of claim 4, wherein the second snap-fit feature is a barb structure extending toward the distal end of the barrel.

6. The connecting sleeve according to claim 5, wherein the wall of the proximal end of the barrel is provided with at least one second notch arranged in one-to-one correspondence with the second clamping portion, and the proximal end of the second clamping portion extends into the interior of the proximal end of the barrel through the corresponding second notch.

7. The connecting sleeve according to claim 1, wherein the proximal end of the barrel is provided with a hollow necked-down section coaxially arranged therewith, the inner cavity of the necked-down section is communicated with the inner cavity of the barrel, the inner diameter and the outer diameter of the necked-down section are gradually reduced along the direction from the distal end to the proximal end, and the proximal end of the necked-down section is provided with a third opening.

8. The connection sleeve according to claim 1, wherein the proximal end of the barrel has a second opening, and wherein the interior of the proximal end of the barrel is provided with a circumferentially disposed step extending to the proximal end face of the barrel, and wherein the step is disposed protruding toward the axis of the barrel, and wherein the inner diameter of the step is smaller than the inner diameter of the barrel.

9. A connecting sleeve according to claim 1, wherein the proximal end of the barrel has a connecting rod coaxially disposed therewith such that the proximal end of the barrel is closed, the connecting rod being provided with a connecting feature disposed along its axial extension.

10. The connection sleeve of claim 1, wherein the proximal end of the barrel has a second opening and wherein the interior of the proximal end of the barrel is provided with internal threads extending axially therealong.

11. The connection sleeve according to claim 1, wherein the proximal end of the barrel has a second opening, and wherein the interior of the proximal end of the barrel is provided with a snap groove, the proximal end of the snap groove being provided with a flare section, the inside diameter of the flare section gradually increasing in the direction from the distal end to the proximal end thereof.

12. A suturing apparatus comprising a suturing needle having a needle head provided with a first clamping groove along its circumference for cooperation with the first clamping portion, a suturing thread connected to the proximal end of the cartridge body, and a connecting sleeve according to any one of claims 1 to 11.

13. The suturing apparatus of claim 12, wherein one end of the needle is provided with a tapered portion having a smaller diameter distal from the first catch slot than the tapered portion proximal to the first catch slot.

14. The suturing apparatus of claim 12, wherein an end of the suture thread for attachment to the cartridge has a roughened section formed by a surface roughening treatment.

15. The suturing apparatus of claim 12, wherein one end of the suture for attachment to the cartridge is provided with a bulb that is inserted into the proximal end of the cartridge.

16. The suturing apparatus of claim 12, wherein an end of the suture for connection to the cartridge has a circumferentially disposed second snap groove recessed toward an axis of the suture.

17. The suturing apparatus of claim 12 wherein the suture is hollow and wherein a filler is disposed within an end of the suture for attachment to the cartridge.

18. The suturing apparatus of claim 12, wherein the suture is a central structure, the suturing apparatus further comprising a first fastener comprising a head and a body coaxially connected in a distal to proximal direction thereof, the head having a diameter greater than that of the body, the head being connected to a step located in the proximal end of the cartridge, the body being inserted into the suture and the body being provided with a second external thread extending axially therealong.

19. The suturing apparatus of claim 12, wherein the suture is hollow, the suturing apparatus further comprises a second fastener, the second fastener comprises a first connecting portion and a second connecting portion coaxially connected along a direction from a distal end to a proximal end of the second fastener, a diameter of the first connecting portion is larger than that of the second connecting portion, the first connecting portion is provided with a third external thread extending along an axial direction of the first connecting portion, the third external thread is matched with an internal thread in the proximal end of the barrel, the second connecting portion is inserted into the suture, and the second connecting portion is provided with a fourth external thread extending along an axial direction of the second connecting portion.

20. The suturing apparatus of claim 12, wherein the suture is hollow, the suturing apparatus further comprises a third fastener, the third fastener comprises an elastic buckling part and a third connecting part which are coaxially connected along a direction from a distal end to a proximal end of the third fastener, the diameter of the elastic buckling part is larger than that of the third connecting part, the elastic buckling part is clamped with a buckling groove in the proximal end of the cylinder, the third connecting part is inserted into the suture, and the third connecting part is provided with a fifth external thread extending along the axial direction of the third connecting part.