CN108143467A - Anastomat for circumcision - Google Patents

Abstract

A circumcision stapler, comprising: an inner ring; an outer ring, comprising at least two arc segments, at least one radially inner end of the arc segment is provided with a piercing portion, and the piercing portion is along the projecting radially inwardly; said outer ring adapted to: attain a broken configuration by breaking at least two of said arc segments, in which broken configuration said inner ring fits within the outer ring; and, From the disconnected state, a ring shape is defined by all of the arc segments sequentially connected together such that the outer ring surrounds the inner ring and the piercing portion is inserted into the inner ring. During the operation, a wound is formed so that the cells of the inner and outer sheets of the foreskin come into direct contact so that a new wound can be formed. This method can speed up the formation of wounds and shorten the healing period.

Description

Circumcision Stapler

technical field

The invention relates to the technical field of medical instruments, in particular to a circumcision stapler.

Background technique

One-time circumcision and anastomosis is the current international leading technology for circumcision. The circumcision stapler is a necessary medical device in the circumcision anastomosis. A clinically available circumcision stapler includes an inner ring and an outer ring. The outer ring includes two arc segments. The two arc segments are rotationally connected at one end, and the other end can be opened and closed, and when closed, they define a ring shape.

The foreskin has an inner plate attached to the body of the penis and an outer plate that is exposed. The working principle of the circumcision stapler is:

First, the inner ring is set in the inner plate of the foreskin, the inner ring surrounds the penis body and supports the foreskin, and the foreskin part of the inner ring near the glans is the redundant foreskin.

Then, the other ends of the two arc segments in the outer ring are set to be disconnected to achieve a disconnected form, which limits a larger accommodation space, which can realize the arrangement of the two arc segments of the outer ring around the inner ring, and the inner ring and the two arc segments There is a foreskin between them, and the inner ring is accommodated in the larger accommodating space.

Immediately afterwards, the other ends of the two arc segments in the outer ring are gradually closed to define a ring shape. During this process, the accommodation space defined by the two segments shrinks gradually to form a closed outer ring. The outer ring wraps the outer plate of the foreskin and buckles the inner ring, and the outer ring and the inner ring clamp the foreskin.

Finally, cut off a portion of the excess foreskin. During this process, the inner ring and the outer ring clamp the foreskin to block the blood circulation in the remaining redundant foreskin, avoid massive bleeding, and promote the ischemic atrophy and natural shedding of the remaining redundant foreskin.

After the operation, only rely on the pinching pressure of the inner ring and the outer ring on the foreskin to block the blood flow and form the wound. However, it is difficult to completely stop the blood flow in clinical practice, so the wound takes a long time to form and there is a problem of delayed healing.

Contents of the invention

The problem solved by the invention is that the existing circumcision stapler has the risk of delayed healing after operation.

In order to solve the above problems, the present invention provides a stapler for circumcision. The circumcision stapler includes: an inner ring;

The outer ring includes at least two arc segments, at least one radially inner end of the arc segment is provided with a piercing part, and the piercing part protrudes inward along the radial direction of the arc segment;

The outer ring is suitable for:

A broken configuration is achieved by breaking at least two of said arc segments in which said inner ring fits within an outer ring; and,

From the disconnected state, a ring shape is defined by all of the arc segments sequentially connected together such that the outer ring surrounds the inner ring and the piercing portion is inserted into the inner ring.

Optionally, a piercing portion is provided at the radially inner end of each arc segment.

Optionally, along the radial direction, an end of the piercing portion away from the radially inner end is designed as a knife point.

Optionally, the piercing portion is in the shape of a pyramid, and the apex of the pyramid serves as the tip of the knife.

Optionally, the outer ring also includes: a hemostasis part;

Corresponding to each of the arc segments, the hemostatic part is provided, and the hemostatic part extends along the circumferential direction of the corresponding arc segment and is connected with the corresponding arc segment;

Inwardly along the radial direction of the corresponding arc segment, the hemostatic portion is higher than the inner peripheral surface of the corresponding arc segment.

Optionally, for the arc segment with the piercing portion, the piercing portion is radially opposite to the hemostatic segment, or the piercing portion passes through a partial thickness of the hemostatic segment.

Optionally, for the arc segment with the piercing part, the hemostatic part is provided on at least one axial side of the arc segment, and the hemostatic part is axially opposite to all the piercing parts.

Optionally, along the radial direction of the arc segment, the piercing part has a tip part away from the radially inner end; along the axial direction of the arc segment, the hemostatic part has a tip protruding at least to the Contact the protrusion of the tip.

Optionally, the inner peripheral surface of the arc segment has a first groove;

The hemostatic unit includes:

The base segment, the hemostatic part is clamped in the first groove corresponding to the arc segment through the base segment;

The hemostatic section, connected with the base section, is located outside the first groove and is suitable for compressing to stop bleeding.

Optionally, for the arc segment with the piercing portion, there are two first grooves, which are respectively located on both axial sides of the arc segment where all the piercing portions are located;

The piercing portion is radially opposite to the hemostatic segment, or the piercing portion passes through a partial thickness of the hemostatic segment;

There are two base sections, which are respectively connected with the hemostatic section and locked in the two first grooves.

Optionally, the material of the base segment is a rigid material, and the material of the hemostatic segment is a flexible material.

The invention also provides a circumcision stapler. The circumcision stapler includes:

inner circle;

the outer ring described in any of the above;

In the ring shape, the inner ring is enclosed within the ring defined by all the arc segments, and the piercing portion is inserted into the inner ring.

Optionally, the radially outer end of the inner ring has a receiving portion, and in the shape of the ring, the piercing portion is adapted to be inserted into the receiving portion.

Optionally, the inner ring includes:

two axially opposite sub-rings;

a plurality of connecting parts connecting two said sub-rings, all said connecting parts are arranged along the circumferential direction;

Two adjacent connecting portions in the circumferential direction define piercing holes to serve as the receiving portions.

Optionally, the inner ring has an outer peripheral surface;

The outer peripheral surface has a second groove as the receiving portion.

Optionally, the bottom wall of the second groove has holes;

From the broken shape to the ring shape, the piercing part is suitable for being inserted into the second groove and the hole.

Optionally, along the axial direction of the inner ring, the second groove has opposite side walls and a bottom wall connecting the two side walls;

Each of the side walls has a support portion; along the depth direction of the second groove, the support portion has a support surface facing away from the bottom wall.

Compared with the prior art, the technical solution of the present invention has the following advantages:

The outer ring includes at least two arc segments, at least one radially inner end of the arc segment is provided with a piercing portion, and the piercing portion protrudes inward along the radial direction of the arc segment where it is located. In the ring shape, The outer ring has several piercing parts distributed along the circumferential direction. In circumcision and anastomosis, all arc segments are connected to define an outer ring in the form of a ring, the outer ring wraps the inner foreskin plate and clasps the inner ring, and the piercing part pierces the inner and outer plates of the foreskin and inserts into the inner ring. The piercing part pierces the foreskin to form a wound, so that the cells of the inner and outer plates of the foreskin directly contact each other, thereby forming a new wound surface. This method can speed up the formation of wounds and shorten the healing period.

Moreover, the inner ring and the outer ring are connected together, and the outer ring is restricted by the foreskin through the piercing part, which can prevent the circumcision stapler from falling off.

Description of drawings

Fig. 1 is a plan view of the outer ring in a broken form in the circumcision stapler of a specific embodiment of the present invention, and the plan view is obtained by looking at the past along the axial direction;

Fig. 2 is a perspective view of the piercing part provided in the arc segment in the outer ring shown in Fig. 1;

Fig. 3 is a cross-sectional view of the hemostatic part of an embodiment of the outer ring shown in Fig. 1, the cross-section of the cross-sectional view passes through the center of the corresponding arc segment;

Fig. 4 is a plan view of the radially inner end of an arc segment in the outer ring shown in Fig. 1;

Fig. 5 is a cross-sectional view of another embodiment of the hemostatic part in the outer ring shown in Fig. 1, the cross-section of the cross-sectional view passes through the center of the corresponding arc segment;

Fig. 6 is a perspective view of the inner ring of an embodiment in the circumcision stapler of the specific embodiment of the present invention;

Fig. 7 is a perspective view of the inner ring of a modified example in the circumcision stapler of the specific embodiment of the present invention;

Fig. 8 is a perspective view of another modified example of the inner ring of the circumcision stapler according to the specific embodiment of the present invention.

Detailed ways

In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

A circumcision stapler for circumcision anastomosis may include: an inner ring and an outer ring.

Referring to Fig. 1, the outer ring 1 may have at least two arc segments, at least one radially inner end of one arc segment is provided with a piercing portion 10, and the piercing portion 10 protrudes inwardly along the radial direction of the arc segment;

Outer ring 1 is suitable for:

A broken configuration is achieved by breaking at least two arcs, in which the inner ring can fit into the outer ring 1; and,

From the disconnected state, a circular ring shape is defined by all the arc segments 11, 12 being sequentially connected together such that the outer ring 1 surrounds the inner ring and the piercing portion 10 is inserted into the inner ring.

Wherein, the outer ring 1 may include two arc segments 11, 12, each radially inner end of the two arc segments 11, 12 is provided with a piercing part 10, and the piercing part 10 protrudes inward along the radial direction of the arc segment. For example, the piercing portion 10 on the arc segment 11 protrudes inward along the radial direction of the arc segment 11 , and the piercing portion 10 on the arc segment 12 protrudes inward along the radial direction of the arc segment 12 . When the two arc segments 11 , 12 are connected together to form a circular ring, the circumferential directions of the two arc segments 11 , 12 merge into the same circumferential direction, and a plurality of piercing portions 10 are distributed along the circumferential direction at the radially inner end of the outer ring.

When used for circumcision and anastomosis, the inner ring and outer ring 1 are adapted as follows:

First, through the inner ring of the foreskin plug to the coronal groove;

Then, the outer ring 1 is operated in a disconnected state, and all the arc segments 11, 12 define a larger accommodating space 1a, which can easily arrange all the arc segments 11, 12 around the inner ring, and at this time, the arc segments 11, 12 Radially opposite to the inner ring, the inner ring is accommodated in this larger accommodation space 1a, and the piercing part 10 is aligned with the foreskin outer plate;

Next, the operating arc segments 11, 12 are connected together to define the outer ring 1 in the form of a ring. During this process, the accommodating space 1a defined by the arc segments 11, 12 shrinks gradually, so that the piercing portion 10 pierces the outer foreskin and the inner foreskin in turn. After reaching the ring shape, the outer ring 1 presses the outer plate of the foreskin, the inner ring is fixed in the outer ring 1, the inner ring and the outer ring 1 clamp the foreskin, and at the same time, the piercing part 10 is inserted into the inner ring radially, so that the inner ring Connect with outer ring 1 together.

Finally, the excess foreskin is trimmed using surgical scissors.

The piercing part 10 pierces the foreskin to form a wound, so that the cells of the inner and outer plates of the foreskin directly contact each other, thereby forming a new wound surface. This method can speed up the formation of wounds and shorten the healing period. Moreover, since the inner ring and the outer ring 1 are connected by the piercing part 10, the piercing part 10 pierces the inner and outer plates of the foreskin, and both the inner ring and the outer ring 1 are restricted by the foreskin, which reduces the risk of the circumcision stapler falling off .

In this technical solution, the radial inner end of at least one arc segment is provided with a piercing portion 10, which includes: the radial inner end of each arc segment has a piercing portion 10, further each arc segment The radially inner end may be provided with several piercing portions 10 arranged in the circumferential direction; or, the radially inner ends of multiple arc segments have several piercing portions 10, in any case, in the form of a ring, the outer ring 1 The radially inner end has several piercing parts 10 to ensure an effective wound surface during operation.

In the form of a ring, several piercing parts 10 are arranged around the inner ring, and more piercing parts 10 can be densely arranged along the circumferential direction. After surgery, several piercing parts 10 can effectively speed up wound healing and achieve more Shorten the postoperative healing period. Moreover, this can make the appearance of the wound surface consistent and enhance the aesthetics of the wound surface. Therefore, parameters such as the number of piercing parts and the arrangement density can be reasonably selected, and are not necessarily limited to this technical solution.

Along the radial direction, the end of the piercing part 10 away from the radially inner end is designed as a knife point 100, which is conducive to easily piercing the outer and inner plates of the foreskin. Referring to FIG. 2 , the piercing portion 10 may be in the shape of a pyramid, and the apex of the pyramid serves as the tip 100 .

In this way, the piercing portion 10 is pyramid-shaped and has a plurality of sides 101 , and two adjacent sides 101 intersect at a ridgeline. Each ridge can be regarded as a sharp edge, and the sharp edge is conducive to cutting and opening the foreskin, so that the piercing part 10 can easily pierce the foreskin.

Referring to Fig. 1, the outer ring 1 may include two arc segments 11, 12, one end of the two arc segments 11, 12 along the respective circumferential direction (respectively the first end a1 of the arc segment 11 and the first end a2 of the arc segment 12 ) is connected for rotation, sharing a turn 18. The other ends (the second end b1 of the arc segment 11 and the second end b2 of the arc segment 12 ) of the two arc segments 11 and 12 can be opened and closed. In the disconnected state, the respective second ends b1, b2 of the two arc segments 11, 12 are disconnected, and the two arc segments 11, 12 are respectively separated outward around the rotating shaft 18, which can form a large accommodation space 1a. From the disconnected shape to the ring shape, the two arc segments 11 and 12 can be buckled inwardly around the rotating shaft in reverse directions, so that the two second ends b1 and b2 are closed to achieve the purpose of limiting the ring shape.

In the form of a ring, the second ends b1 and b2 of the arc segments 11 and 12 are snap-fitted. For example, the second end b1 has a first connection portion 13 with a mounting hole 13a; the second end b2 has a second connection portion 14 with an insertion portion 14a. In the form of a ring, the first connecting portion 13 and the second connecting portion 14 are axially opposite, and the insertion portion 14a is inserted into the mounting hole 13a, and is clamped in the mounting hole 13a, connecting the first connecting portion 13 and the second connecting portion 14. Realize the closure of the two second ends b1 and b2. In this technical solution, the first connection part 13 is provided with two installation holes 13a, and the second connection part 14 is provided with two corresponding insertion parts 14a, and the insertion parts 14a correspond to the installation holes 13a one-to-one, which can form a buckle connect. In addition, each of the first connecting portion and the second connecting portion is provided with a mounting hole and an insertion portion, and the respective insertion portions of the two connecting portions are inserted into the mounting hole of the other connecting portion.

Both circumferential ends of each arc segment have circumferential protrusions. The first end a1 and the second end b1 of the arc segment 11 respectively have a first protruding portion 110 , and the first end a2 and the second end b2 of the arc segment 12 respectively have a second protruding portion 120 . In the broken state, the first protruding portion 110 of the first end a1 is separated from the second protruding portion 120 of the first end a2, and the first protruding portion 110 of the second end b1 is separated from the second protruding portion 120 of the second end b2. . In the ring form, the first protruding portion 110 of the first end a1 and the second protruding portion 120 of the first end a2 may overlap in the axial direction, and the first protruding portion 110 of the second end b1 and the second protruding portion of the second end b2 The two protruding parts 120 can overlap in the axial direction, which can prevent the outer ring 1 from forming gaps in the circumferential direction, resulting in failure to effectively block the blood flow in the redundant foreskin, resulting in slow healing.

The outer ring 1 may further include: a hemostatic part 15 . Corresponding to each arc segment, a hemostatic part 15 is provided, and the hemostatic part 15 extends along the circumferential direction of the corresponding arc segment and is connected with the corresponding arc segment; along the radial direction of the corresponding arc segment, the hemostatic part 15 is higher than the corresponding arc segment. inner surface. For example, a hemostatic portion 15 is provided corresponding to the arc segment 11, and the hemostatic portion 15 extends along the circumferential direction of the arc segment 11 and is connected to the arc segment 11; along the radial direction of the arc segment 11, the hemostatic portion 15 is higher than the inner surface. This can be analogized to the arc segment 12 and the hemostatic portion 15 thereon.

This can achieve the following effect: during the operation, the outer ring 1 and the inner ring clamp the foreskin, and the hemostatic part 15 can compress the foreskin. When the piercing part 10 pierces the foreskin and circumcisions redundant foreskin, bleeding is caused, and the hemostatic part 15 provides the function of compression and hemostasis, which can stop bleeding in time and prevent massive bleeding. Moreover, the hemostasis part 15 is integrated with the arc segments 11 and 12, which eliminates the need for additional pressure to stop bleeding during the operation and improves operation efficiency.

In the disconnected form, the two sections of hemostatic part 15 corresponding to the two arc sections 11 and 12 are also disconnected; in the ring form, the two sections of hemostatic part 15 can be combined into a ring, which can be compressed to stop bleeding along a circle, and the hemostatic effect is better. it is good. Referring to Fig. 1, a hemostatic portion 15 is provided on at least one axial side of the corresponding arc segment, which includes: providing a hemostatic portion 15 on one axial side of the corresponding arc segment; or, on both axial sides of the corresponding arc segment A hemostatic part 15 is provided. Taking the arc segment 11 as an example, the hemostatic portion 15 can be disposed on at least one axial side of the arc segment 11 , and the same is true for the arc segment 12 .

For an arc segment 11 with piercings 10 , the hemostasis 15 is axially opposite all piercings 10 . During the operation, when the piercing part 10 pierces the foreskin, the hemostatic part 15 compresses and deforms to achieve timely and effective hemostasis. This can be analogized to the relative positional relationship between the arc segment 12 and the hemostasis part 15 .

In a natural state, the hemostatic portion 15 is radially inwardly higher than the piercing portion 10 , here it is higher than the knife tip 100 . During the operation, from the broken shape to the ring shape, the hemostatic part 15 can first contact the foreskin and gradually compress the foreskin; after the outer ring 1 and the inner ring are fixed, the hemostatic part 15 can provide the effect of compression and hemostasis.

Referring to Fig. 3 and in conjunction with Fig. 1, along the radial direction of the arc segment 11 where it is located, the piercing portion 10 has a tip portion (the end where the tip 100 is located) away from the radially inner end of the arc segment 11; along the axial direction of the arc segment 11 where it is located , the hemostatic portion 15 has a protruding portion 150 protruding at least toward the tip to contact the tip. The protruding part 150 is in contact with the tip of the piercing part 10, and when the piercing part 10 pierces the foreskin, the protruding part 150 can timely press the wound to stop bleeding. When the hemostatic part 15 is provided on both axial sides of the corresponding arc segment 11 , the protruding parts 150 of the two hemostatic parts 15 are axially opposite and can wrap the piercing part 10 .

Referring to FIG. 4, the inner peripheral surface of the arc segment 11 has a first groove 11a;

The hemostatic unit 15 may include:

The base segment 16, the hemostatic part 15 is clamped in the first groove 11a of the arc segment 11 through the base segment 16;

The hemostatic section 17, connected to the base section 16, is located outside the first groove 11a and is suitable for compression to stop bleeding.

In the hemostatic part 15 , the base body section 16 and the hemostatic section 17 may be in a separate structure, and the two parts are manufactured separately and then connected together. At this time, the base body segment 16 can be made of rigid material, and can be stably locked in the first groove 11a. Rigid material can choose hard plastic.

The hemostatic section 17 can be made of flexible material, which is suitable for compression and deformation, so as to avoid damage to the foreskin. For example, the hemostatic section 17 can be a sponge pad. The connection mode of the base body segment 16 and the hemostatic segment 17 may be bonding.

In addition, the base body section 16 and the hemostatic section 17 can be an integral piece, which is integrally formed and manufactured. At this time, both can be sponge pads.

The first groove 11 a extends along the circumferential direction of the arc segment 11 and is arc-shaped. Correspondingly, the base segment 16 may be arc-shaped, adapt to the shape of the first groove 11a, and be locked in the first groove 11a as a whole. In addition, the base body segment 16 may include a plurality of separated independent parts, and the plurality of independent parts are locked in the first groove 11a at the same time, which may also play a positioning effect. The hemostatic section 17 is arc-shaped (refer to FIG. 1 ), which is conducive to compressing and hemostasis around the foreskin.

The inner peripheral surface of the arc segment 11 is provided with two first grooves 11a, which are respectively distributed on both axial sides of all the piercing parts 10 along the arc segment 11 where they are located. In this way, corresponding to the two first grooves 11a, two hemostatic portions 15 are respectively provided at both ends of the arc segment 11 in the axial direction, and the respective hemostatic segments 17 of the two hemostatic portions 15 are two independent parts. During the operation, hemostasis was performed by compression on both axial sides of the arc segment 11, and the hemostatic effect was good. In addition, the hemostatic portion may be provided only on one axial side of the corresponding arc segment.

In other alternatives, referring to Fig. 5 and in combination with Fig. 2, the present invention also provides another hemostatic part 15', using this hemostatic part 15', it can be set as the piercing part 10 and the hemostatic part 15' diametrically opposite, or the piercing part 10 passes through a part-thickness hemostatic part 15'.

Specifically, in this hemostatic part 15', there may be two base segments 16', which are respectively connected to the hemostatic segment 17' and locked in two first grooves 11a (refer to FIG. 4). In this solution, the hemostatic section 17' is connected to two base sections 16' at the same time, and the two base sections 16' simultaneously support a hemostatic section 17'. Especially for the arc segment 11 with piercing parts 10, all the piercing parts 10 on the arc segment 11 may be diametrically opposed to the hemostatic segment 17', or the piercing parts 10 may pass through the partial thickness of the hemostatic segment 17'. In this case, the hemostatic section 17' hides the tip 100 of the piercing part 10 before the operation. This can prevent the skin from being stabbed by the piercing part 10 when the doctor installs the outer ring 1, which is beneficial to protect the patient. In this way, the hemostatic section 17' can timely and effectively compress the wound surface formed by the piercing part 10 to stop bleeding, and the effect is remarkable.

In addition to using the first groove 11a to connect the hemostatic part 15, the hemostatic part may be directly bonded to the end faces of one axial end or both axial ends of the corresponding arc segment.

The arrangement of the arc segment 11 and the hemostatic part 15 thereon and the connection therebetween can be analogized to the arrangement of the arc segment 12 and the hemostatic part 15 thereon and the connection therebetween.

Referring to FIG. 6 in conjunction with FIG. 1 , the radially outer end of the inner ring 2 may have a receiving portion, and in the form of a ring, the piercing portion 10 is suitable for being inserted into the receiving portion. This can have the following technical effects:

On the one hand, during the operation, the piercing part 10 first contacts the outer plate of the foreskin. Because the foreskin has a certain degree of elasticity, under the support of the opening edge of the receiving part, the piercing part 10 will press the foreskin to gradually deform from the opening of the receiving part to the inside of the receiving part until reaching a tight state. In the tight state, the piercing part 10 can easily pierce the foreskin. Therefore, the accommodating part is beneficial to the piercing part 10 to pierce the foreskin, improving the operation efficiency and success rate.

On the other hand, during and after the operation, the piercing part 10 can be accommodated in the receiving part, reducing the radial gap between the outer ring 1 and the inner ring 2, so that the outer ring 1 and the inner ring 2 can clamp the foreskin, Effectively avoid excess blood flow in the foreskin, which is conducive to the healing rate.

The inner ring 2 may include: two axially opposite sub-rings 20;

Several connecting parts 21 connecting two sub-rings 20, all connecting parts 21 are arranged along the circumferential direction;

Two connecting portions 21 adjacent in the circumferential direction define a piercing hole 2a as the receiving portion.

There may be a one-to-one correspondence between the piercing holes 2 a and the piercing parts 10 , and the corresponding piercing parts 10 may be inserted into the piercing holes 2 a and accommodated therein. This can have the following technical effects:

On the one hand, during the operation, the outer end of the connecting part 21 and the sub-ring 20 can support the foreskin until the foreskin elastically deforms to a tight state;

On the other hand, the piercing part 10 passes through the inner and outer plates of the foreskin, and the tip with the knife point 100 is stuck in the piercing hole 2a of the inner ring 2, and the piercing part 10 forms a tight connection with the inner ring 2. This can strengthen the fixing effect of the circumcision stapler on the foreskin, and better prevent the circumcision stapler from falling off.

As an alternative, referring to FIG. 7 in combination with FIG. 1 , the inner ring 2 ′ has an outer peripheral surface, and the outer peripheral surface has a second groove 2 b as the receiving portion. During the operation, at the opening position of the second groove 2b, the side wall of the second groove 2b can support the foreskin, so that the foreskin is stretched to a tight state.

The second groove 2b has a bottom wall 22 which may have a hole 2c. From the disconnected shape to the ring shape, the piercing part 10 can be inserted into the second groove 2b and the hole 2c, so that the tip of the knife point 100 can be stuck in the hole 2c, thereby enhancing the fixing effect.

The second groove 2b is ring-shaped and circles around the inner ring 2' in the circumferential direction. As a variant, the second groove may be a plurality of independent grooves arranged along the circumferential direction of the inner ring, and the piercing part may be inserted into the corresponding groove.

As another alternative, referring to FIG. 8 in conjunction with FIG. 1 , the second groove 2 d has axially opposite side walls 23 and a bottom wall 24 connecting the two side walls 23 . Each side wall 23 has a support portion 25 , and along the depth direction of the second groove 2 d , the support portion 25 has a support surface 250 facing away from the bottom wall 24 . From the disconnected configuration to the circular configuration, the support surface 250 can support the foreskin and promote the foreskin to reach a taut state.

Along the depth direction of the second groove 2d, the second groove 2d is divided into a first section d1 and a second section d2, and the first section d1 is closer to the bottom wall 24 than the second section d2. Each side wall 23 of the second groove 2d includes a side wall portion located in the first segment d1 and a side wall portion of the second segment d2, and the bottom wall 24 of the second groove 2d is the bottom wall of the first segment d1 . The distance between the sidewalls on both sides of the axial direction of the first segment d1 is smaller than the distance between the side walls on both sides of the axial direction of the second segment d2, so that the side walls on both sides of the axial direction of the first segment d1 can be used as the support part 25, and the second segment d2 has a bottom wall as a supporting surface 250 .

This provides a possibility for the support 25 . In other feasible solutions, along the depth direction, the second groove can be divided into three sections, namely the bottom section, the middle section and the top section, and the bottom section is deeper than the top section. The distance between the sidewalls on both axial sides of the middle section is smaller than the distance between the sidewalls on both axial sides of the top section and the bottom section, and the middle section can be used as a supporting part. Or, in addition to this, the side wall at the opening position of the second groove can be designed to be turned inside out to form an inside turn-up, and the inside turn-up can be used as a supporting portion.

Although the present invention is disclosed above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so the protection scope of the present invention should be based on the scope defined in the claims.

Claims (16)

1. a kind of anastomat for circumcision, which is characterized in that including：

Inner ring；

Outer shroud, including at least two segmental arcs, the radial inner end of at least one segmental arc is equipped with puncture portion, and the puncture portion is along institute In the radially inwardly projecting of segmental arc；

The outer shroud is suitable for：

It disconnects reaching disconnection form by least two segmental arcs, in the disconnection form, the inner ring can be packed into outer shroud It is interior；And

From the off-state, it is connected in turn to define circular ring shape state by all segmental arcs, so that the outer shroud Ring set inner ring and the puncture portion insertion inner ring.

2. anastomat for circumcision as described in claim 1, which is characterized in that the radial inner end of each segmental arc is equipped with thorn Wear portion.

3. anastomat for circumcision as described in claim 1, which is characterized in that along the radial direction, the puncture portion is far from institute The one end for stating radial inner end is designed as point of a knife.

4. anastomat for circumcision as described in claim 1, which is characterized in that the puncture portion is in pyramid-shaped, the top of pyramid Point is used as the point of a knife.

5. anastomat for circumcision as described in claim 1, which is characterized in that further include：Hemostasis portion；

The corresponding each segmental arc is equipped with the hemostasis portion, the hemostasis portion along corresponding segmental arc circumferentially extending and with corresponding arc Section connection；

Along corresponding segmental arc radially-inwardly, the hemostasis portion is higher by the inner peripheral surface of corresponding segmental arc.

6. anastomat for circumcision as claimed in claim 5, which is characterized in that for the segmental arc with the puncture portion, institute State puncture portion with it is described hemostasis section diametrically or the puncture portion pass through segment thickness the hemostasis section.

7. anastomat for circumcision as claimed in claim 5 is it is characterized in that, for the segmental arc with the puncture portion, in institute At least axial side for stating segmental arc is equipped with the hemostasis portion, and the hemostasis portion and all puncture portions are axially opposing.

8. anastomat for circumcision as claimed in claim 7, which is characterized in that along the radial direction of place segmental arc, the puncture portion With the point far from the radial inner end；Along the axial direction of place segmental arc, the hemostasis portion has at least to the point It is protruding to the protruding portion for contacting the point.

9. anastomat for circumcision as claimed in claim 5, which is characterized in that the inner peripheral surface of the segmental arc is recessed with first Slot；

The hemostasis portion includes：

Matrix section, the hemostasis portion are arranged in by matrix section in first groove of corresponding segmental arc；

Hemostasis section, connect with described matrix section, is suitable for hemostasis by compression outside first groove.

10. anastomat for circumcision as claimed in claim 9, which is characterized in that for the segmental arc with the puncture portion, institute It states there are two the first groove tools, respectively positioned at axial both sides of all puncture portions along place segmental arc；

The puncture portion with it is described hemostasis section diametrically or the puncture portion pass through segment thickness the hemostasis section；

There are two described matrix section tools, connect and is arranged in two first grooves with the hemostasis section respectively.

11. anastomat for circumcision as claimed in claim 9, which is characterized in that the material of described matrix section is rigid material, And the material of the hemostasis section is flexible material.

12. such as claim 1-11 any one of them anastomat for circumcision, which is characterized in that the radial outer end of the inner ring With receiving portion, in the annulus form, the puncture portion is adapted for insertion into the receiving portion.

13. anastomat for circumcision as claimed in claim 12, which is characterized in that the inner ring includes：

Two axially opposing subrings；

Several connecting portions of two subrings are connected, all connecting portions are circumferentially arranged；

Circumferentially adjacent two connecting portions limit pierced holes, using as the receiving portion.

14. anastomat for circumcision as claimed in claim 12, which is characterized in that the inner ring has peripheral surface；

The peripheral surface has the second groove, using as the receiving portion.

15. anastomat for circumcision as claimed in claim 14, which is characterized in that the bottom wall of second groove has hole Hole；

From the disconnection form to the annulus form, the puncture portion is adapted for insertion into the second groove and described hole.

16. anastomat for circumcision as claimed in claim 14, which is characterized in that along inner ring axial direction, described second is recessed Slot has the side wall being oppositely arranged and the bottom wall for connecting two side；

Each side wall has support portion；Along the depth direction of second groove, the support portion has backwards to the bottom The supporting surface of wall.