CN111714261A

CN111714261A - Lumen anastomosis supporting dilator

Info

Publication number: CN111714261A
Application number: CN202010735867.7A
Authority: CN
Inventors: 吴炅; 罗万川; 王强; 丁毅; 林炜善; 陈嘉健
Original assignee: Shanghai Huodian Medical Equipment Co ltd; Fudan University Shanghai Cancer Center
Current assignee: Shanghai huodian Medical Equipment Co.,Ltd.
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2020-09-29

Abstract

The invention discloses a lumen anastomosis supporting dilator, which comprises: a support body made of an elastic material or a shape memory material for being at least partially placed in a lumen to expand a vessel wall; a connecting rod connected to the support body. When performing anastomosis, the surgeon may grasp the support body with the instrument and place the support body in the lumen, and when the instrument is released, the support body, which may be made of an elastic material or a shape memory material, may spring back and properly prop up the lumen. Therefore, the support dilator for lumen anastomosis can rapidly dilate the lumen, assist the operation, reduce the damage of the tube wall and improve the efficiency and the success rate of lumen anastomosis.

Description

Lumen anastomosis supporting dilator

Technical Field

The invention relates to the field of auxiliary instruments for lumen anastomosis in medical surgery, in particular to a lumen anastomosis supporting dilator.

Background

The lumen anastomosis is a clinical basic operation form, comprises lumen injury repair, lumen transplantation, lumen lapping, lumen suture and repair and the like, can be used in the fields of blood vessels, lymphatic channels, vas deferens, biliary tracts, trachea, bronchus and the like, and is a commonly used effective treatment method for reconstructing lumen functions. The application is very wide, and the method is commonly used in various surgical operations, such as skin flap transplantation, limb amputation replantation, blood vessel accidental injury, organ transplantation, arteriovenous internal fistula anastomosis, lymphatic vessel anastomosis, vas deferens anastomosis, biliary tract anastomosis, trachea anastomosis and the like. With the continuous development of microsurgical instruments, microssutures and surgical microscopes, the manual small (micro) lumen anastomosis technology is gradually mature, and the caliber of the anastomotic lumen becomes thinner and thinner. However, even for experienced surgeons, it is not easy to perform a perfect lumenal anastomosis, especially the small microcatheter lumenal anastomosis referred to above.

Firstly, the anastomotic stoma of two opposite broken ends of the lumen needs to be accurately involuted without torsion, stenosis, eversion or inversion, that is, the two broken ends are required to be involuted to combine the intima-intima and the muscular layer. This results in minimal healing scarring and increased patency rates. Therefore, the calibers of the two broken ends are required to be equal as much as possible, and the small lumens can be expanded by expanders with equal diameters or special forceps for expanding the lumens, but the paradox is that the non-invasive technology is very important for some small lumens, the forceps are not allowed to clamp the lumen intima and the muscular layer to be anastomosed, and otherwise, the patency rate is reduced. A flexible or atraumatic inner support is required to achieve anastomotic apposition.

Secondly, taking a blood vessel as an example, the blood vessel is used as a lumen, and for the vascular anastomosis, the blood vessel needs to be exposed to control blood flow so as to provide a bloodless field to complete the operation; according to the size of blood vessel and anatomical position, different types of non-invasive vascular forceps, soft and elastic colloid bands or balloon catheters are selected to block blood flow through the blood vessel cavity. The blood vessel wall is elastically retracted and collapsed after blocking blood flow, the lumen is reduced and even blocked, the front wall and the rear wall are often mutually attached and are not easy to separate, great obstacle is caused to the suturing operation, and the vessel wall on the opposite side can be easily punctured during suturing. The operation difficulty is large, the efficiency is low, the time consumption is long, the blood flow blocking time is long, and the risk is large. Some doctors will make some tamponades to assist suturing, which, although some problems may be solved, is still inefficient, single-function and non-standard.

Disclosure of Invention

The invention aims to solve the technical problem of lumen suturing in the prior art and provides a lumen anastomosis support dilator.

The invention solves the technical problems through the following technical scheme:

a lumen anastomosis support dilator, comprising:

a support body made of an elastic material or a shape memory material for being at least partially placed in a lumen to expand a vessel wall;

a connecting rod connected to the support body.

In the scheme, when the anastomosis operation is performed, a doctor can clamp the supporting main body by using an instrument (such as micro forceps, a needle holder and the like) and place the supporting main body in the tube cavity, and after the instrument is loosened, the supporting main body made of the elastic material or the shape memory material can rebound and properly support the tube cavity, so that the doctor can conveniently perform subsequent anastomosis operation. After the anastomosis is completed, the support body may be removed through the unseamed gap using the connecting rod and subsequent suturing may be continued. Therefore, the supporting dilator for lumen anastomosis can rapidly dilate the lumen, assist in surgical treatment, reduce the damage of the tube wall and improve the efficiency and success rate of lumen anastomosis.

The above elastic material may be rubber (including but not limited to polyisoprene, styrene-butadiene rubber, isoprene rubber, chloroprene rubber, butyl rubber, etc.), silicone rubber (including but not limited to methyl silicone rubber, methyl vinyl silicone rubber, methyl phenyl silicone rubber, methyl vinyl phenyl silicone rubber, nitrile silicone rubber, fluorosilicone rubber, etc.), polyurea, latex, and the like. The shape memory material may include a shape memory alloy material and a shape memory polymer material. Shape memory alloy materials include, but are not limited to, nickel-titanium alloys, titanium-nickel-copper, titanium-nickel-iron, titanium-nickel-chromium, copper-nickel alloys, copper-aluminum alloys, copper-zinc-aluminum alloys, iron-silicon-carbon alloys, iron-nickel alloys, iron-manganese-carbon alloys, iron-manganese-silicon alloys. Shape memory polymeric materials include, but are not limited to, polyvinyl alcohol, polycaprolactone, polylactic acid, polydioxanone, polyisoprene, crosslinked polyethylene, polynorbornene, styrene-butadiene copolymers, polyamides, polyethylene terephthalate, polyacrylic acid, polymethacrylic acid, polyacrylamide, poly-N-isopropylacrylamide, epoxy polymers, polydimethylsiloxane, polyaniline, polyurethane, poly-L-lysine, poly-L-glutamic acid, collagen, alginic acid, hyaluronic acid, chitosan, starch, cellulose, and copolymers thereof.

Preferably, the connecting rod is provided with a plurality of the support bodies.

In this scheme, a plurality of support main parts can be applicable to a plurality of lumens, and a plurality of support main parts can have multiple different external diameters moreover, therefore a lumen anastomosis support expander can be applicable to the lumen of different diameters.

Preferably, two ends of the connecting rod are respectively provided with one supporting body.

In the scheme, the two supporting main bodies can be respectively arranged in two pipe cavities to be anastomosed, so that the anastomosis of the two pipe cavities can be realized by using the pipe cavity anastomosis supporting expander, the two pipe cavities are relatively fixed during the suturing, the suturing operation is convenient, and the quantity of required equipment in the operation is reduced.

Preferably, the support body is a solid of revolution.

In this scheme, because the cross section of lumen is mostly circular basically, support the main part and can adapt to the lumen for the solid of revolution betterly to do benefit to the operation of coincide.

Preferably, the support body comprises a main body part, at least one end part of the main body part is provided with a conical part, the outer diameter of the conical part is gradually reduced from the main body part to the outside, and the maximum outer diameter of the main body part is larger than that of the conical part;

and/or the included angle between the axial leads of the two supporting main bodies at the two ends of the connecting rod is 0-180 degrees.

In this scheme, the main part has great external diameter, can be used to support the lumen, and the toper portion can be for shapes such as circular cone, circular truncated cone, and the toper portion can conveniently insert in the lumen to make whole support main part get into the lumen comparatively easily. The support body may be provided with only one tapered portion, or may be provided with one tapered portion at each of both ends of the main body portion so that the support body can be inserted into the lumen from both directions. That is, the support body may be shaped such that the middle outer diameter is larger and both outer diameters are smaller, or such that one outer diameter is larger and one outer diameter is smaller. Specifically, the support body may be spherical, hemispherical, ellipsoidal, semi-ellipsoidal, conical, truncated cone, drop-shaped, olive-shaped, gourd-shaped, and the like.

Because the openings of the two lumens to be sutured can have different relative positions, the axial leads of the two supporting main bodies at the two ends of the connecting rod can be arranged to be collinear, parallel or at other angles so as to adapt to the lumen anastomosis requirements of different conditions.

Preferably, the maximum outer diameter of the body portion of each of the support bodies is the same or different.

In this embodiment, the main body portions of the two support bodies on the same connecting rod may have the same maximum outer diameter to be suitable for anastomosis between lumens having the same outer diameter. In addition, the two supporting bodies can also have different maximum outer diameters so as to be suitable for anastomoses between lumens with different diameters.

Preferably, the lumen anastomosis support dilator further comprises an operating rod, and the end part of the operating rod is connected to the middle part of the connecting rod.

In this scheme, utilize the action bars can promote, draw the support subject to the position and the angle of adjustment support subject, the user can utilize the action bars will support the subject and take out from the lumen.

Preferably, the connecting rod is bendable so that the relative position between different support bodies is adjustable.

In this scheme, because the connecting rod can be buckled, consequently when taking out the support subject, the position and the angle of support subject can automatic adjustment to avoid haring the lumen. And the connecting rod can be bent to any angle, so that the surgical instrument can be suitable for different anastomosis operations. The connecting rod may be a straight rod, and in addition, the connecting rod may also be pre-molded as a bent tube as required for a particular anastomosis procedure. The connecting rod may be made of the same material as the support body, and further, the connecting rod may be integrally formed with the support body. The connecting rod and the supporting body can also be made of different materials, and those skilled in the art can select the materials according to actual conditions, further, the connecting rod and the supporting body can be integrally formed, but not limited to be integrally formed.

Preferably, the supporting body is provided with a hollow cavity, and one end of the supporting body is provided with a through hole communicated with the hollow cavity; or, through holes communicated with the hollow cavity are respectively formed at two ends of the supporting main body.

In this solution, the support body may have a hollow cavity, so that the support body is easily compressed. The supporting body is provided with a through hole so as to facilitate the molding of the hollow cavity. If the through holes are formed in the two ends of the support main body, the hollow cavity penetrates through the support main body, so that in the process of anastomosis surgery, fluid in the lumen can continue to flow through the hollow cavity, and the problem that the suturing is influenced by the collapse of the lumen wall caused by the interruption of the flow of the fluid in the lumen in the process of lumen suturing can be solved. The through-hole at one or both ends of the support body may be one or more. It will be appreciated that the support body may also be provided without a hollow cavity, so that the support body has a greater supporting force.

Preferably, the connecting rod is provided with a fluid passage, and the fluid passage is communicated with the hollow cavity of the supporting main body.

In the scheme, the fluid in the tube cavity can flow in the hollow cavity, the fluid in the hollow cavity can be drained to a preset position through the fluid channel, and the fluid channel can be arranged according to actual conditions so as to be beneficial to the implementation of anastomosis operation. Specifically, one end of the hollow cavity may be made to communicate with the fluid passage, so that the fluid flowing into the hollow cavity is completely discharged from the fluid passage, or the fluid in the hollow cavity is entirely injected from the fluid passage. In addition, when the connecting rod is provided with a plurality of supporting bodies, the hollow cavities of the supporting bodies can be communicated through the fluid channel, different supporting bodies are arranged in different tube cavities during suture operation, and fluid in one tube cavity can flow into the other tube cavity through the hollow cavities and the fluid channel, so that the different tube cavities can be communicated when the suture operation is performed.

The positive progress effects of the invention are as follows: the lumen anastomosis support dilator can be applied to lumen anastomosis operations, such as anastomosis of blood vessels, lymphatic channels, vas deferens, biliary tracts, trachea, bronchi and other lumens. The doctor can utilize the apparatus (such as micro-tweezers, needle holder etc.) centre gripping to support the main part, and will support the main part and place the main part in the lumen, and when the apparatus unclamped, the support main part that elastic material made can kick-back and suitably prop up the lumen, is convenient for the doctor to carry out subsequent anastomosis operation. Because the supporting body is provided with the through hollow cavity, the fluid in the lumen can continuously keep flowing through the hollow cavity in the process of anastomosis operation, and the problem that the lumen wall collapses to influence the suturing due to the interruption of the fluid flowing in the lumen in the process of lumen suturing can be solved. When the sewing is partially completed, the support body may be taken out through the gap that is not sewn by using the connection bar, and the subsequent sewing is completed. Therefore, the lumen anastomosis support dilator can rapidly dilate a lumen, keep the dilatation state in the lumen anastomosis process, assist the operation, reduce the damage of the tube wall and improve the anastomosis efficiency and success rate.

Drawings

Fig. 1 is a schematic structural view of a lumen anastomosis support dilator in accordance with embodiment 1 of the present invention.

Fig. 2 is a schematic view of the internal structure of the lumen anastomosis support dilator according to embodiment 1 of the present invention.

Fig. 3 is a schematic view of the lumen anastomosis support dilator of example 1 in accordance with the present invention, as applied to end-to-end anastomosis.

Fig. 4 is a schematic view of the lumen anastomosis support dilator of example 1 according to the present invention applied to an end-side anastomosis.

Fig. 5 is a schematic view of the lumen anastomosis support dilator of example 1 in use in a side-to-side anastomosis procedure.

Fig. 6 is a schematic structural view of a lumen anastomosis support dilator in accordance with embodiment 2 of the present invention.

Fig. 7 is a schematic view of the lumen anastomosis support dilator of example 2 according to the present invention in application to end-to-end anastomosis.

FIG. 8 is a schematic view of a modified configuration of the lumen anastomosis support dilator of FIG. 6.

FIG. 9 is a schematic view of a modified configuration of the lumen anastomosis support dilator of FIG. 8.

Fig. 10 is a schematic view of another alternate configuration of the lumen anastomosis support dilator of fig. 6.

FIG. 11 is a schematic view of the lumen anastomosis support dilator of FIG. 10 as applied to an end-to-end anastomosis procedure.

FIG. 12 is a schematic view of the lumen anastomosis support dilator of example 3 in accordance with the present invention, as applied to an end-to-side anastomosis.

FIG. 13 is a schematic view of a modified version of the lumen anastomosis support dilator of FIG. 12 as applied to an end-to-side anastomosis.

FIG. 14 is a schematic view of another alternative configuration of the lumen anastomosis support dilator of FIG. 13 as applied to an end-to-side anastomosis.

FIG. 15 is a schematic view of a modified configuration of the lumen anastomosis support dilator of FIG. 14.

FIG. 16 is a schematic view of the lumen anastomosis support dilator of FIG. 15 as applied to an end-to-side anastomosis.

FIG. 17 is a schematic view of the lumen anastomosis support dilator of example 4 in use in a side-to-side anastomosis procedure.

FIG. 18 is a side-by-side anastomosis of a deformed configuration of the luminal anastomosis support dilator of FIG. 17.

FIG. 19 is a schematic view of another alternative configuration of the lumen anastomosis support dilator of FIG. 17, as applied to a side-to-side anastomosis procedure.

FIG. 20 is a schematic structural view of a modified configuration of the lumen anastomosis support dilator of FIG. 19.

FIG. 21 is a schematic view of the lumen anastomosis support dilator of FIG. 20 as applied to a side anastomosis procedure.

Description of the reference numerals

Support body 1

Hollow cavity 11

Tapered portion 12

Main body part 13

Through hole 14

Connecting rod 2

Fluid channel 21

Operating rod 3

Pipe wall 100

Lumen 101

Detailed Description

The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.

For a better understanding of the present invention, the three most commonly used types of endoluminal sutures to which the present invention applies are listed below:

1. end-to-end anastomosis

The side anastomosis is widely used for clinical bypass transplantation, generally, a receptor lumen is used as a longitudinal straight incision or an oval incision, and the end face of the donor lumen is trimmed into an inclined plane, wherein the length of the inclined plane is larger than the diameter of the receptor lumen.

2. End-to-end anastomosis

The end surfaces of the two suture lumens 101 should be as identical as possible or may be trimmed to form a bevel to enlarge the stoma area. Or an internal bracing means may be employed to capture the proximal stitched end face.

3. Side-to-side anastomosis

For side-to-side anastomosis, the two lumens to be anastomosed are usually approximated and the side wall of the anastomotic site is clamped with a special lumen clamp to make a corresponding longitudinal incision.

Example 1

As shown in fig. 1 to 5, the lumen anastomosis support dilator according to embodiment 1 of the present invention comprises a support body 1 and a connecting rod 2, wherein the support body 1 is made of an elastic material or a shape memory material, and can self-expand into an original shape even if deformed, thereby providing a good radial support effect, and the flexible outer surface does not damage the inner surface of the lumen, and can be easily retracted under the clamping of a special instrument. The supporting body 1 is at least partially arranged in the lumen 101 to expand the tube wall 100, and the supporting body 1 is provided with a hollow cavity 11 penetrating through; the connecting rod 2 is connected to the support body 1.

When performing an anastomosis operation, a surgeon may use an instrument (e.g., micro forceps, needle holder, etc.) to hold the supporting body 1, and place the supporting body 1 in the lumen 101, and when the instrument is released, the supporting body 1 made of an elastic material or a shape memory material may rebound and provide sufficient radial supporting force to support the tube wall 100, thereby facilitating the surgeon to perform a subsequent anastomosis operation. When the sewing is partially completed, the support body 1 may be taken out through the gap that is not sewn using the coupling bar 2, and the subsequent sewing may be continued. Therefore, the supporting dilator for lumen 101 anastomosis can rapidly dilate the lumen 101, assist in surgical treatment, reduce the damage of the tube wall 100 and improve the efficiency and success rate of lumen anastomosis.

As shown in fig. 1 and 2, the support body 1 may have a hollow cavity 11, and one or both ends of the support body 1 may be opened with one or more through holes 14 communicating with the hollow cavity 11. In this embodiment, the two ends of the support body 1 are both provided with the through holes 14 communicated with the hollow cavities 11, so that in the process of anastomosis surgery, the fluid in the lumen 101 can continue to flow through the hollow cavities 11, and the problem that the wall of the lumen 101 collapses to affect suturing due to the interruption of the fluid flow inside the lumen 101 in the suturing process of the lumen 101 can be solved.

In some other embodiments, the supporting body 1 may not be provided with a hollow cavity, i.e. the supporting body 1 is solid, so that the supporting body 1 has a larger supporting force.

Since the cross section of the lumen is mostly substantially circular, the supporting body 1 is preferably a solid of revolution, so that the supporting body 1 can be better adapted to the lumen 101 to facilitate the anastomosis procedure.

The support body 1 comprises a body part 13, at least one end part of the body part 13 is provided with a conical part 12, the outer diameter of the conical part 12 decreases from the body part 13 to the outside, and the maximum outer diameter of the body part 13 is larger than that of the conical part 12. The main body 13 has a large outer diameter for supporting the lumen 101, and the tapered portion 12 may have a shape of a cone, a truncated cone, or the like, and the tapered portion 12 can be easily inserted into the lumen, so that the entire support body 1 can be easily inserted into the lumen 101. The support body 1 may be provided with only one tapered portion 12, or may be provided with one tapered portion 12 at each end of the main body portion 13 so that the support body 1 can be inserted into the lumen from both directions. That is, the support body 1 may be shaped such that the middle outer diameter is large and the both outer diameters are small, or such that one outer diameter is large and the other outer diameter is small. Specifically, the support body 1 may have a spherical shape, a hemispherical shape, an ellipsoidal shape, a semi-ellipsoidal shape, a conical shape, a truncated cone shape, a water droplet shape, an olive shape, a gourd shape, and the like.

In the present embodiment, the support body 1 is of a water drop shape, and the pointed end of the support body 1 forms the tapered portion 12, so that the support body 1 can be easily inserted into the lumen 101 by the tapered portion 12.

As shown in fig. 3, the end-to-end anastomosis can be performed using two lumen anastomosis support dilators of the present embodiment, and using the two lumen anastomosis support dilators, a support body 1 is inserted into a lumen 101 from an end opening of the lumen 101 to support a vessel wall 100, respectively, and the maximum outer diameters of the two support bodies 1 are the same. The connecting rod 2 is located outside the lumen 101 for adjusting the position of the support body 1 and for removing the support body 1. The ends of the two lumens 101 are arranged oppositely to suture, and when the suturing is completed by about two thirds, the supporting body 1 is clamped by the instrument and taken out from the lumens 101, and then the remaining part is sutured continuously until the operation is completed.

As shown in fig. 4, two lumen anastomosis support dilators of the present embodiment can also be used for performing end-side anastomosis, and two lumen anastomosis support dilators are used, wherein the support body 1 of one lumen anastomosis support dilator is plugged into the end opening of one lumen 101 to prop up the tube wall 100 (the lumen anastomosis support dilator is not shown in the figure), and the support body 1 of the other lumen anastomosis support dilator is plugged into the side opening of the other lumen 101 to prop up the tube wall 100, so that the end opening of one lumen 101 is finally sutured with the side opening of the other lumen 101. During the anastomosis procedure, fluid in the lumen 101 may continue to flow through the hollow lumen 11. For a specific suturing process, reference may be made to the suturing process of the end-to-end anastomosis, which is not described herein again.

In addition, as shown in fig. 5, two lumen anastomosis support dilators of the present embodiment can be used for performing side-to-side anastomosis, and specifically, referring to fig. 5, a support body 1 is inserted into the lumen 101 from a side opening of the lumen 101 by using the two lumen anastomosis support dilators, respectively, to perform side-to-side anastomosis of the two lumens 101. For a specific suturing process, reference may be made to the suturing processes of the end-to-end anastomosis and the end-to-side anastomosis, which are not described herein again.

The connecting rod 2 may be provided with a plurality of supporting bodies 1, so that the anastomosis between the two lumens 101 can be performed using one lumen anastomosis supporting dilator, and the body portions 13 of the plurality of supporting bodies 1 may have various different outer diameters, so that one lumen anastomosis supporting dilator may be applied to lumens 101 having different diameters. In this embodiment, two ends of the connecting rod 2 are respectively provided with a supporting body 1, and the two supporting bodies 1 can be respectively placed in two lumens 101 to be anastomosed, so that the anastomosis of the two lumens 101 can be realized by using one lumen anastomosis supporting dilator, so that the two lumens 101 are relatively fixed during the suturing, the suturing operation is facilitated, and the number of required instruments in the operation is reduced.

Two support bodies 1 on the same connecting rod 2 may have the same maximum outer diameter to be suitable for anastomosis between lumens 101 of the same diameter. In addition, the main body portions 13 of the two support bodies 1 may have different maximum outer diameters so as to be suitable for anastomosis between the lumens 101 having different diameters. In some embodiments, one or more support bodies 1 can also be provided in the middle of the connecting rod 2 to meet different lumen anastomosis needs.

Because the openings of two lumens to be sutured may have different relative positions, the included angle between the axial lines of the two supporting main bodies 1 at the two ends of the connecting rod 2 may be 0-180 °, so that the axial lines of the two supporting main bodies 1 may be arranged in a collinear, parallel or other angle to meet the requirements of lumen anastomosis operations in different situations.

The connecting rod 2 can be bent, so that the relative positions of the different supporting main bodies 1 on the connecting rod 2 can be adjusted, the lumen 101 is prevented from being damaged when the supporting main body 1 is taken out, and the connecting rod 2 can be bent to any angle so as to be suitable for different anastomosis operations. Due to the requirements of a specific anastomosis procedure, the connecting rod 2 may also be pre-formed as a bent tube, e.g. in this embodiment, the angle between the connecting rod 2 and the axial center line of a support body 1 is 45 °. Preferably, the connecting rod 2 may be made of an elastic material or a shape memory material, further, the connecting rod 2 and the supporting body 1 may be an integrally formed structure, the connecting rod 2 is made of the same material as the supporting body 1, and is in a strip shape or a column shape, and different lengths may be set according to requirements. The connecting rod 2 can be compliantly deformed to realize the shape of the lumen 101 while maintaining a certain angle to facilitate the control of the position and angle of the support body 1.

The lumen anastomosis support dilator of the embodiment solves the problem of thorny existing in lumen suturing through the design of simplicity and practicality, can conveniently support and expand in the operation process, accurately provides the identical anastomotic end face of the caliber, is simple to operate and convenient to recover. The placing and taking out can be completed only by simple and specially-made micro forceps, needle holders or similar instruments, the sewing efficiency and success rate are greatly improved, and the risk of bad diseases after healing is reduced. And the invention adopts an integrated molding process, has relatively low cost and is very beneficial to popularization and use in the local-level hospitals with limited cost.

Example 2

Fig. 6 to 11 show a lumen anastomosis support dilator according to embodiment 2 of the present invention, which is substantially the same as embodiment 1 except that: the two ends of the connecting rod 2 are respectively provided with a supporting main body 1, the axial leads of the supporting main bodies 1 are on the same straight line, and the axial leads of the two supporting main bodies 1 are collinear. The lumen anastomosis support dilator of the present embodiment may therefore be adapted for end-to-end anastomosis (e.g., fig. 7 and 11). In operation, the supporting body 1 is held by an instrument (such as micro-forceps, needle holder, etc.) and the pointed end portions are used as advancing directions and respectively placed into the ports of the two lumens 101 to be sutured so as to obtain the same end face size and shape, and the connecting rod 2 is left outside the lumens 101. After about two thirds of the suture is finished, the connecting rods 2 outside the tube cavities 101 are pulled to match with instruments to clamp the outer surfaces of the supporting main bodies 1, and the supporting main bodies 1 in the two tube cavities 101 are respectively taken out; the remaining portion is then sutured on to completion of the procedure.

The connecting rod 2 may be further provided with a fluid passage 21, and both ends of the fluid passage 21 communicate with the hollow cavity 11 of the support body 1. The fluid in the lumen 101 may flow within the hollow cavity 11, and the fluid in the hollow cavity 11 may be drained to another lumen through the fluid passage 21.

Specifically, in the present embodiment, one end of the hollow cavity 11 is communicated with the fluid passage 21, and since the end of the hollow cavity 11 is directly communicated with the fluid passage 21, the fluid flowing into the hollow cavity 11 is completely discharged from the fluid passage 21, or the fluid in the hollow cavity 11 is completely injected from the fluid passage 21.

For example, in fig. 7, both ends of the fluid passage 21 communicate with the ends of the hollow cavities 11 of one support body 1, respectively, and thus the hollow cavities 11 of the two support bodies 1 communicate through the fluid passage 21. Different support bodies 1 are arranged in different lumens 101, and fluid in one lumen 101 can flow into the other lumen 101 through the hollow cavity 11 and the fluid passage 21, so that when suture operation is performed, the different lumens 101 can be communicated with each other, and the flow of the fluid in the lumens 101 is not interrupted during the operation.

The plurality of support bodies 1 on a single lumen anastomosis support dilator may be the same size (see fig. 6, 7, 9-11) or different sizes (see fig. 8). When the two support main bodies 1 with one large and one small are arranged on the lumen anastomosis support dilator, the lumen anastomosis support dilator can be adapted to lumens 101 with various diameters, the application range of the lumen anastomosis support dilator is improved, and the support main bodies 1 with different sizes are used for lumens 101 with different diameters.

The luminal anastomosis procedure can be performed without interrupting the flow of the internal substance. In alternative embodiments, one end of the hollow cavity 11 may be closed, both ends of the hollow cavity may be closed, or the inside of the hollow cavity may be a solid structure, and the supporting force of the supporting body of the solid structure is greater; or the connecting rod 2 is not provided with the fluid channel 21 or is of a solid structure, and the push-pull force of the connecting rod of the solid structure is larger so as to prevent the fluid in the lumen 101 from entering the lumen anastomosis support dilator, which is suitable for the condition that the flow of the substance in the lumen 101 needs to be interrupted in the operation.

The lumen anastomosis support dilator further comprises a manipulation rod 3, and specifically, as shown in fig. 9, the end portion of the manipulation rod 3 is connected to the middle portion of the connecting rod 2. The support body 1 can be pushed and pulled by the operation rod 3 to adjust the position and angle of the support body 1, and the user can take out the support body 1 from the lumen 101 by using the operation rod 3.

Example 3

Referring to fig. 12 to 16, there is shown a lumen anastomosis support dilator according to embodiment 3 of the present invention, which is substantially the same as embodiment 1 except that: two ends of the connecting rod 2 are respectively provided with a supporting main body 1, and the axial leads of the two supporting main bodies 1 are mutually vertical. Therefore, when the lumen anastomosis support dilator of the present embodiment is applied to end-side anastomosis, referring to fig. 12 in particular, the connecting rod 2 is an elbow, and the extending directions of the axial lines of the two support bodies 1 on the connecting rod 2 are substantially perpendicular to each other. In two lumens 101 to be anastomosed, an opening is opened on the side of one lumen 101, one support body 1 of the lumen anastomosis support dilator is plugged into the lumen 101 from the opening on the side, the other support body 1 is plugged into the opening on the end of the other lumen 101, during the plugging process, an instrument (such as micro forceps, needle holder and the like) can be used for clamping the support body 1 to reduce the volume of the support body 1, and meanwhile, the tapered part 12 of the support body 1 is used as an advancing end part to facilitate the support body 1 to enter the lumen 101. After the stitching is partially completed, the support body 1 may be removed from the unsewn gap, and then the entire stitching is completed.

The bent rod may be a bent rod obtained by direct machining, or may be a bendable material of the connecting rod 2 in example 2, and the bent rod of the present embodiment can be obtained by bending the straight rod in example 2.

As shown in fig. 14, in the lumen 101 of which side is opened, since the support body 1 has the hollow cavity 11, the fluid inside the lumen 101 can flow normally. Moreover, the connecting rod 2 can be further provided with a fluid passage 21, and the fluid passage 21 can communicate the hollow cavities 11 of the two supporting bodies 1, so that fluid between the two cavities 101 can be communicated. In alternative embodiments, the fluid passage 21 (fig. 12 and 13) may be omitted, or the flow direction of the fluid passage 21 and the hollow cavity 11 may be changed to meet different surgical requirements.

The supporting body 1 on the same lumen anastomosis supporting dilator can be of the same outer diameter (fig. 12 and 13) or can have different shapes and sizes (fig. 14 to 16) to adapt to different lumens 101, which can be adjusted by the person skilled in the art according to the actual situation.

Referring to fig. 13, 15 and 16, the lumen anastomosis support dilator may further include a manipulation rod 3, an end portion of the manipulation rod 3 being connected to a middle portion of the connection rod 2 to facilitate a user to push and pull to adjust a position and an angle of the support body 1.

Example 4

Fig. 17 to 21 show a lumen anastomosis support dilator according to embodiment 4 of the present invention, which is substantially the same as embodiment 1 except that: two ends of the connecting rod 2 are respectively provided with a supporting main body 1, and the axial leads of the two supporting main bodies 1 are parallel to each other. Therefore, the lumen anastomosis support dilator of the embodiment can be applied to side anastomosis, the connecting rod 2 is in a V shape, and the two support bodies 1 on the connecting rod 2 are arranged in parallel. At this time, openings are formed on the side portions of the two lumens 101 to be anastomosed, the two support bodies 1 are respectively plugged into the two lumens 101 from the side openings, in the plugging process, an instrument (such as micro forceps, a needle holder and the like) can be used for clamping the support bodies 1 to reduce the volume of the support bodies 1, and meanwhile, the tapered portions 12 of the support bodies 1 are used as advancing end portions to facilitate the support bodies 1 to enter the lumens 101. After the stitching is partially completed, the support body 1 may be removed from the unsewn gap, and then the entire stitching is completed. The hollow cavities 11 of the supporting bodies 1 enable fluid in the tube cavities 101 not to be blocked, and the connecting rod 2 can also be provided with fluid channels 21, and two ends of each fluid channel are respectively communicated with the hollow cavities 11 of the two supporting bodies 1, so that the fluid between the two tube cavities 101 can be communicated. In alternative embodiments, the fluid passage 21 may not be provided, or the flow direction of the fluid passage 21 and the hollow cavity 11 may be changed to meet different operation requirements.

The supporting body 1 on the same lumen anastomosis supporting dilator can be of the same outer diameter (fig. 17 and 18), and the main body portion 13 of the supporting body 1 can also be of different shapes and sizes (fig. 19 to 21) to adapt to different lumens 101, which can be adjusted by those skilled in the art according to the actual situation.

Referring to fig. 18, 20 and 21, the lumen anastomosis support dilator may further include a manipulation rod 3, an end portion of the manipulation rod 3 being connected to a middle portion of the connection rod 2 to facilitate a user to push and pull to adjust a position and an angle of the support body 1.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.

Claims

1. A lumen anastomosis support dilator, comprising:

a connecting rod connected to the support body.

2. The lumen anastomosis support dilator of claim 1, wherein a plurality of said support bodies are disposed on said connecting rod.

3. The lumen anastomosis support dilator of claim 2, wherein each end of said connecting rod is provided with one of said support bodies.

4. The lumen anastomosis support dilator of claim 2, wherein said support body is a body of revolution.

5. The lumen anastomosis support dilator of claim 4, wherein said support body includes a main body portion, at least one end portion of said main body portion being provided with a tapered portion having an outer diameter decreasing outwardly from said main body portion, the main body portion having a maximum outer diameter greater than the maximum outer diameter of said tapered portion;

6. The luminal anastomosis support dilator of claim 4, wherein the maximum outer diameter of the body portion of each said support body is the same or different.

7. The lumen anastomosis support dilator of claim 1, further comprising a lever having ends connected to a middle portion of the connecting rod.

8. The lumen anastomosis support dilator of claim 1, wherein said connecting rod is bendable such that a relative position between different said support bodies is adjustable.

9. The lumen anastomosis support dilator according to any one of claims 1 to 8, wherein the support body is provided with a hollow cavity, and one end of the support body is provided with a through hole communicated with the hollow cavity; or, through holes communicated with the hollow cavity are respectively formed at two ends of the supporting main body.

10. The lumen anastomosis support dilator of claim 9, wherein said connecting rod defines a fluid passageway in communication with said hollow cavity of said support body.