CN114869370A - Liver suspension device under peritoneoscope - Google Patents

Abstract

Aiming at the defect that the existing surgical auxiliary device cannot help medical staff to limit the position of the liver under non-invasive conditions, so that the surgical treatment of the liver and stomach space cannot be effectively performed, the present invention provides a laparoscopic liver suspension device. The holding part (1) is clamped and fixed on the first body tissue of the patient through the clamping opening (11) to hold the liver suspension device in the patient's body in a hanging manner; the holding part (1) is structured It has an elastic double-arm clamp structure, and the clamping port (11) is provided on its clamping surface in such a way that it can limit the position of the first in-vivo tissue while maintaining the shape of the first in-vivo tissue There are clamps (12). The present invention can non-invasively clamp the first internal tissue, so that the first internal tissue and the left lobe of the liver can leave the liver-stomach space under the pulling action of the elastic sling (2).

Description

A laparoscopic liver suspension device

technical field

The invention relates to the technical field of medical devices, in particular to a laparoscopic liver suspension device.

Background technique

When performing abdominal surgery, doctors usually use endoscopic surgery with a small surgical incision. During the operation, due to the difference of the surgical site, the doctor needs to temporarily displace other organs in advance to expose the field of view required for the operation. In the prior art, a tissue retractor is usually used for operation. At present, organ translocation operations mainly include the following two schemes:

The first solution is to use medical instruments that can be clamped at both ends to be respectively clamped on the organ tissue to be displaced and the inner wall of the abdominal cavity. The disadvantage is that the chuck is easy to fall off when a relatively large traction force is required, and the chuck is not suitable for the inner wall of the abdominal cavity. It is easy to cause injury, and intra-abdominal compression is difficult to provide the support required for greater traction.

Another solution is to open at least two penetrating holes in the abdominal cavity, and then use a wire-shaped instrument to suspend the organ that needs to be pulled through the surface tissue. The disadvantage of this type of operation is that it needs to increase the penetration hole position, which increases the injury of the patient and increases the workload of the doctor.

The patent document with the publication number of CN103829979A discloses a pneumoperitoneum laparoscopic abdominal wall suspension device, which comprises an incision protective cover with a suspension function and a splint, and the incision protective cover with a suspension function is lifted from the bottom to the top by the lifting member, The ring sleeve and the fixing part are integrally formed, the incision protection sleeve and the splint are fixedly connected through the fixing part, the incision protection sleeve with the suspension function is made of soft material, the thickness of the lifting part is greater than that of the ring sleeve, and the device also includes installation A hollow annular support ring on the inner wall of the ring sleeve, the shape of the support ring is the same as that of the incision protective sleeve, and the hardness of the supporting ring is greater than that of the incision protective sleeve; the device has a suspending function of the incision protective sleeve. The lifting member is close to the center The thickness of the area is smaller than that of the edge area; the device can support the abdominal wall under the surgical incision, which not only avoids unnecessary damage to the abdominal wall, but also makes the surgical field of view good, and at the same time, the structure is simple and the operation is convenient, using conventional laparoscopic surgical instruments It can complete the laparoscopic surgery without pneumoperitoneum and avoid the adverse reactions caused by pneumoperitoneum.

The patent document with publication number CN104203079A discloses a laparoscopic retractor having a single shaft with a proximal end and a distal end. The distal end of the shaft terminates in a T-piece attached to the shaft by one or more hinges. The hinges allow the T-piece to swivel and/or rotate independently about the axis. The proximal end of the shaft terminates in a handle that allows the surgeon to manipulate the retractor after inserting it into a patient's abdominal cavity. The proximal and distal ends of the T-piece each have a grasper that can be controlled by the surgeon. However, this scheme has the following deficiencies: the first forceps head and the post-repair handle cannot be separated, one wound can only be retracted at one position, and more wounds need to be added when multi-point migration is performed. Second, the first end clamp head and the second end clamp head of the patent are rigidly connected, and the fixed positions of the two ends cannot be separately operated, which brings inconvenience to the operation of the doctor. Third, the distance between the clamp heads at both ends is fixed, and the length of the connecting part cannot be adjusted according to actual needs. To sum up, this scheme has many defects in operation and use.

Therefore, in view of the defects of the prior art, there is a need for a liver suspension device that can non-invasively clamp and suspend the tissue and liver in the body. In particular, there is a need for a liver suspension device that can effectively protect the clamped tissue, the suspended organ, and the suspended tissue, and prevent the above-mentioned internal tissue from being damaged during the suspension process. Changes in the environment adjust its suspension position and force on the liver, so that the liver and stomach space can always be exposed to the surgeon's field of vision.

In addition, on the one hand, there are differences in the understanding of those skilled in the art; on the other hand, because the inventor has studied a large number of documents and patents when making the present invention, but the space limit does not list all the details and contents in detail, but this is by no means The present invention does not possess the features of the prior art, on the contrary, the present invention already possesses all the features of the prior art, and the applicant reserves the right to add relevant prior art to the background art.

SUMMARY OF THE INVENTION

In view of the deficiencies of the prior art, the technical solution of the present invention provides a laparoscopic liver suspension device, which at least includes a holding part, the holding part is clamped and positioned on the first internal tissue of a patient according to the clamping opening The liver suspension device is held in the patient's body in a hanging manner; the holding portion is configured as an elastic double-arm clip structure, and the holding port is capable of holding the first in vivo tissue according to its position. In the case of the shape, the position of the first in-vivo tissue is limited, and a clamping member is provided on the clamping surface, wherein at least two of the clamping members are respectively arranged in the clamping port and the first body. The two opposing gripping surfaces where the tissue contacts. The advantage is that the holding part can selectively clamp the first in-vivo tissue in the patient under the control of the doctor, and by optimizing the clamping opening of the holding part, the clamping opening can clamp the first in-vivo tissue. It can also effectively ensure the integrity of the first internal tissue held by it, so that the left lobe of the liver can leave the liver-stomach gap under the pulling action of the liver suspension device, and eliminate the obstruction of the liver-stomach gap by the left lobe of the liver. , so that the liver and stomach gap is exposed to the doctor's field of vision, so that the doctor can process the tissue structure of the liver and stomach gap.

According to a preferred embodiment, the clamping member is provided with a limiting edge on its surface in such a way that the clamping member can limit the position of the first in-vivo tissue clamped by the clamping opening, wherein the clamping member is The member includes a first clamping member and a second clamping member capable of restricting the position of the first in vivo tissue located in the clamping opening; the limiting ribs are arranged at intervals along the first direction on the first clamping member On the surface of the part, the limiting ribs are also arranged at intervals on the surface of the second clamping part along the second direction, and when the clamping opening is closed, the first clamping part and the second clamping part The holding pieces are attached to each other in a manner that can make the limiting edges provided on the two surfaces stagger each other, so as to clamp the first in vivo tissue. The advantage is that the first clamping member and the second clamping member can increase the contact area and the force-bearing area between the first in-vivo tissue and the clamping member, thereby improving the stability of the clamping member for clamping the first in-vivo tissue. At the same time, it can also ensure that the force-bearing area of the clamped part of the first in-vivo tissue is large enough, so as to effectively disperse the pressing force on the first in-vivo tissue, so that the first in-vivo tissue is clamped and pulled in the process of being pulled. It is also possible to maintain the integrity of the organizational structure.

According to a preferred embodiment, the surfaces of the first clamping member and the second clamping member are respectively provided with limiting grooves that can be matched with the limiting edges, wherein the first clamping member The surface of the second clamping piece is spaced with the limiting grooves along the second direction in a manner consistent with the arrangement of the limiting ribs on the surface of the second clamping piece; the surface of the second clamping piece is arranged according to The limiting grooves are spaced apart along the first direction in a manner consistent with the arrangement of the limiting ribs on the surface of the first clamping piece. The advantage is that the limiting grooves and the limiting edges are set at intervals, so that the first internal tissues such as the hepatogastric ligament and the omentum tissue at the edge of the hepatogastric ligament can be better fixed between the first clamping piece and the second clamping piece. between the two clamps. In particular, the limit grooves and limit edges arranged staggered along the first and second directions can better hold the omentum tissue in the form of a grid, and the limit edges at different positions can clamp the omentum in different directions. The tissue is clamped and fixed.

According to a preferred embodiment, when the first clamping member and the second clamping member are attached to each other, the limiting edge on the first clamping member can be connected with the second clamping member. The limit grooves on the holder are matched with each other, and the limit grooves on the first clamp can cooperate with the limit edges on the second clamp, so that the The clamping member can increase the contact area between the first clamping member and the second clamping member and the first in vivo tissue and change the effect of the first clamping member and the second clamping member on the first clamping member. The position of the first in vivo tissue is limited by the manner of the clamped configuration of an in vivo tissue.

According to a preferred embodiment, at least one engaging hole for engaging with the clip applier is provided on the side of the holding portion away from the clamping opening, and the engaging hole is used to withstand the opening force provided by the clip applier, thereby opening the clamping port; the holding part is further provided with an elastic piece capable of forming a clamping force against the first internal tissue at one end away from the clamping opening, and the elastic piece can limit the holding part to the The state without the action of the opening force enables the clamping opening to be closed or clamp the first in vivo tissue under the action of the clamping force of the elastic member.

According to a preferred embodiment, the end of the elastic double-arm clamp constructed by the holding portion that is far away from the clamping port is also connected with a connection capable of pulling the first in-vivo tissue clamped by the clamping port away from its place in the clamping port. The elastic sling at the initial position in the patient's body, the end of the elastic sling away from the holding part is also connected with a hanging piece capable of fixing the elastic sling on the second in-vivo tissue away from the liver in a hanging manner .

According to a preferred embodiment, when the clamping port clamps the first in-vivo tissue, the doctor adjusts all the elastic slings according to the stretching parameters of the elastic sling and the position of the second in-vivo tissue. The hanging position of the hanging piece enables the first internal tissue and the left lobe of the liver to leave the liver-stomach space under the pulling action of the elastic sling.

According to a preferred embodiment, a connecting unit capable of defining the position of the elastic sling on the elastic member is further provided on the elastic member of the holding portion, and the connecting unit can be operated by a doctor Pulling down the elastic sling moves on the ring body of the elastic piece, thereby changing the direction of the pulling force provided by the elastic sling.

According to a preferred embodiment, the surfaces of the first clamping member and the second clamping member are further provided with an adhesive layer capable of improving adhesion with the first in vivo tissue, the adhesive layer The shape of the first in-vivo tissue in the closed clamping port can be further defined in a manner of compressing the accommodating space of the first in-vivo tissue by absorbing liquid. The advantage is that the adhesive layer can absorb the tissue fluid or mucus that flows out of the first in-vivo tissue such as the hepatogastric ligament and the omentum tissue at the edge of the hepatogastric ligament held by the first clamping piece and the second clamping piece, In addition, expansion occurs under the condition of absorbing tissue fluid, so that the first holding member and the second holding member can better hold the first internal tissue. The adhesive layer can remove tissue fluid or mucus on the surface of the first in vivo tissue, so that the friction coefficient between the first clamping member, the second clamping member and the first in vivo tissue is increased, so that the first clamping member and the second clamping member are The holder can hold the first in vivo tissue more stably, and in addition, the expansion of the adhesive layer can compress the accommodating space of the first in vivo tissue between the first holding member and the second holding member, so that the first in vivo tissue is The interaction force with the first clamping member and the second clamping member is increased, thereby further defining the relative position between the first in vivo tissue and the first clamping member and the second clamping member.

The technical solution of the present invention also provides a laparoscopic liver suspension device, which includes at least two clamps that define the position of the first in-vivo tissue in an opposite manner, and the clamps are capable of restricting The position of the first in-vivo tissue held by the holding port is provided with a limiting rib on the surface thereof, wherein the holding member includes a relative movement to limit the first in-vivo tissue located in the holding port. A first clamping piece and a second clamping piece at the position of the internal tissue; the limiting ribs are spaced along the first direction on the surface of the first clamping piece, and the limiting ridges are also arranged along the second The directions are arranged at intervals on the surface of the second clamping piece, and when the clamping opening is closed, the first clamping piece and the second clamping piece are arranged in accordance with the The limiting edges are mutually attached in a staggered manner, so as to clamp the first in vivo tissue.

Description of drawings

1 is a schematic structural diagram of a preferred laparoscopic liver suspension device proposed by the present invention;

2 is a schematic structural diagram of a holding part of a preferred laparoscopic liver suspension device proposed by the present invention;

3 is a schematic plan view of a first clamping member of a preferred laparoscopic liver suspension device proposed by the present invention;

FIG. 4 is a schematic plan view of a second holding member of a preferred laparoscopic liver suspension device proposed by the present invention.

List of reference signs

1: Holding part; 2: Elastic sling; 3: Hanging piece; 4: Connecting unit; 11: Clamping port; 12: Clamping piece; 13: Limiting edge; 14: Limiting groove; 15: Engagement hole; 16: elastic member; 17: adhesive layer; 121: first clamping member; 122: second clamping member.

Detailed ways

The following detailed description is given in conjunction with the accompanying drawings.

Example 1

The present application provides a laparoscopic liver suspension device, which may include a holding part 1 , an elastic sling 2 , a suspension piece 3 and a connecting unit 4 .

According to a specific embodiment shown in FIG. 1 , the holding portion 1 can non-invasively clamp the first internal tissue of the patient, and the end of the holding portion 1 away from the first internal tissue for holding the first internal tissue is flexibly connected through the connecting unit 4 to be elastically connected Sling 2. The end of the elastic sling 2 away from the holding part 1 is also connected with a hanging piece 3 capable of connecting the elastic sling 2 with the second internal tissue of the patient. When the holding part 1 clamps the first in-vivo tissue, the doctor suspends the first in-vivo tissue and the The tissue-connected liver enables the left lobe of the liver to leave the liver-stomach space under the pulling action of the liver suspension device, eliminating the obstruction of the liver-stomach space by the left lobe of the liver, thereby exposing the liver-stomach space to the doctor's field of vision, which is convenient for doctors The tissue structure of the liver and stomach space was processed.

As shown in FIG. 2 , the holding part 1 forms a clamping structure in the form of an elastic double-arm clamp through two intersecting rods. The front end of the clamping structure can clamp the designated first in-vivo tissue, so that under the action of external force, the clamping structure pulls the clamped first in-vivo tissue to move, thereby exposing the surgical site to be treated to the doctor. under the field of vision. Preferably, the holding part 1 may include a clamping opening 11 , a clamping member 12 and a limiting edge 13 . The clamping port 11 is used to clamp and fix the designated first in-vivo tissue, so that the holding part 1 can be held in the patient's body in a hanging manner. Specifically, the liver suspension device is introduced into the body through a laparoscopic cannula (Trocar, usually 10 mm or 12 mm in maximum diameter). When the liver suspension device is folded, the diameter of the liver suspension device is smaller than the diameter of the laparoscopic sleeve, so that it can move directionally in the sleeve. When the liver suspension device is inserted into the abdominal cavity of the patient, the doctor opens the gripping ports 11 and positions the gripping ports 11 on both sides of the first body tissue to be gripped, so as to remove the opening force exerted on the holding portion 1 Afterwards, the clamping port 11 is closed, thereby clamping and limiting the first in vivo tissue. Preferably, the gripping port 11 is provided with a gripping member 12 on its gripping surface in such a way that it can define the position of the first internal tissue while maintaining the shape of the first internal tissue. At least two clamping members 12 are respectively disposed on two opposite clamping surfaces of the clamping opening 11 in contact with the first in vivo tissue. Preferably, the clamping port 11 is the end of the rod body of two intersecting rods constituting the holding part 1 , wherein the ends of the rods are detachably installed with the clamping port 11 to prevent the clamping port 11 from clamping the first internal tissue. The clamping member 12 that causes damage to the first in-vivo tissue at the time. Preferably, the plate-shaped clamping member 12 can be parallel to the plate surface of the clamping opening 11 .

Preferably, when the gripping port 11 is closed, the designated first intrabody combination is gripped between the gripping pieces 12 respectively provided on the two opposite surfaces of the gripping port 11 . Preferably, the clamping member 12 can be in direct contact with the first in-vivo tissue, and the clamping member 12 is made of non-rigid material, so as to reduce the pressure strength of the clamping member 12 on the first in-vivo tissue, especially to avoid the moment when the opening force disappears, Since the inertial force of the two clamping members 12 moving toward each other causes high-strength impact compression on the first in-vivo tissue, the clamping members 12 can gradually clamp the first in-vivo tissue under the action of the clamping force, and in the above process In the middle, the clamping member 12 can form a buffer force through slight deformation, so as to avoid damage to the first internal tissue at the moment of being clamped. Preferably, the clamping member 12 can adjust the relative relationship between its axis and the axis of the rod, so that the clamping surface of the clamping member 12 can be adapted to the shape and shape of the first in vivo tissue. Specifically, when the extension length of the first in-vivo tissue is long and the lateral width is narrow, the clamping member 12 may be arranged such that its axis and the axis of the rod member coincide with each other; when the extension length of the first in-vivo tissue is short and the lateral width is short When it is wider, the clamping piece 12 can be set so that its axis is perpendicular to the axis of the rod, so that the first in-vivo tissue can be clamped by the clamping piece 12 as much as possible, thereby improving the ability of the first in-vivo tissue to be clamped. The stability of the clamp 12 is improved, so as to prevent the first in-vivo tissue from being damaged under the action of the pulling force due to the high concentration of the pulling force when the first in-vivo tissue is pulled by the holding portion 1 .

Preferably, the two clamping members 12 are provided with limiting ribs 13 on their surfaces in such a way that they can limit the position of the first in-vivo tissue clamped by the clamping openings 11 . Specifically, the clamping member 12 includes a first clamping member 121 and a second clamping member 122 respectively disposed on the two rod members. When the two rods constituting the holding portion 1 move towards each other to close the clamping opening 11 , the first clamping member 121 and the second clamping member 122 move towards each other, and finally fit together. Preferably, under the action of the opening force, the gap between the first clamping member 121 and the second clamping member 122 is used to accommodate the first in vivo tissue. As shown in FIGS. 3 and 4 , limiting ribs 13 are respectively provided on two opposite surfaces of the first clamping member 121 and the second clamping member 122 . Further preferably, several limiting edges 13 are arranged on the surface of the first clamping member 121 at intervals along the first direction. Further preferably, several limiting edges 13 are also arranged on the surface of the second clamping member 122 at intervals along the second direction. When the clamping opening 11 is closed, the first clamping member 121 and the second clamping member 122 are attached to each other in such a way that the limiting ribs 13 provided on the surfaces of the two are interlaced, so as to clamp the first inner body. organize. Preferably, the first direction and the second direction are perpendicular to each other. For example, the first direction may be the length direction of the clamping member 12 , and the second direction may be the width direction of the clamping member 12 . Preferably, the length of the limiting ribs 13 is smaller than the width of the clamping member 12 , so that the second clamping member 122 is provided with at least two limiting ribs 13 on a width line parallel to the width direction thereof. Preferably, the limiting edges 13 on the straight line with the same width are evenly spaced, so that there is a gap between two adjacent limiting edges 13 on the straight line with the same width. Preferably, the limiting edges 13 on straight lines with different widths are spaced and distributed in a manner parallel to each other. Preferably, the distance between the two limiting edges 13 that are parallel to each other is greater than the length of a single limiting edge 13 , so that the second clamping member 122 and the first clamping member 121 can be effectively attached. Similarly, the first clamping member 121 is provided with at least two limiting edges 13 on a length line parallel to its length direction. Preferably, the limiting edges 13 on the same length line are evenly spaced, so that there is a gap between two adjacent limiting edges 13 on the same length line. Preferably, the limiting edges 13 on straight lines with different lengths are spaced and distributed in parallel to each other. Preferably, the distance between the two limiting edges 13 that are parallel to each other is greater than the length of a single limiting edge 13 , so that the first clamping member 121 and the second clamping member 122 can be effectively attached. Preferably, the limiting rib 13 on the first clamping member 121 can be inserted into a plurality of limiting ribs evenly spaced on the surface of the second clamping member 122 when the first clamping member 121 and the second clamping member 122 are close to each other. The gap between the positioning edges 13 makes a clamping space with a curved surface contour formed between the first clamping member 121 and the second clamping member 122, so that the contact area between the clamping member 12 and the first in vivo tissue is obtained. It is effectively improved, thereby preventing the first in-vivo tissue from falling off from the two opposing clamping members 12 when being pulled by the holding portion 1 . In addition, the limiting ribs 13 on the surfaces of the first clamping member 121 and the second clamping member 122 are arranged in a staggered manner, which further improves the position of the first in-vivo tissue between the first clamping member 121 and the second clamping member 122 . The stability of the first in vivo tissue and the liver connected with the first in vivo tissue can maintain a relatively fixed connection with the clamping member 12 . In the present invention, the limiting ribs 13 are arranged on the surface of the clamping member 12, so that the clamping member 12 can clamp the first internal tissue in a more stable and effective manner, thereby facilitating the holding portion 1 to drive the first internal tissue and communicate with the first internal tissue. The position of the liver connected to the in-vivo tissue is changed, in particular, the force-bearing area of the first in-vivo tissue is increased, so as to avoid the first in-vivo tissue from being stretched and damaged due to concentrated force.

Preferably, the surface of the first clamping member 121 is provided with a limiting groove 14 that can cooperate with the limiting ribs 13 provided on the second clamping member 122 , so that the first clamping member 121 and the second clamping member 121 When the pieces 122 are attached to each other, the limiting ribs 13 provided on the second clamping piece 122 can be at least partially embedded into the limiting grooves 14 formed on the first clamping piece 121 . Preferably, the surface of the second clamping member 122 is provided with a limiting groove 14 that can cooperate with the limiting ribs 13 provided on the first clamping member 121 , so that the first clamping member 121 and the second clamping member 121 When the pieces 122 are attached to each other, the limiting ribs 13 provided on the first clamping piece 121 can at least partially fit into the limiting grooves 14 formed on the second clamping piece 122 . Further preferably, limiting grooves 14 are spaced along the second direction on the surface of the first clamping member 121 in a manner consistent with the arrangement of the limiting ribs 13 on the surface of the second clamping member 122 . Further preferably, limiting grooves 14 are spaced along the first direction on the surface of the second clamping member 122 in a manner consistent with the arrangement of the limiting ribs 13 on the surface of the first clamping member 121 . When the first clamping member 121 and the second clamping member 122 are attached to each other, the limiting ribs 13 on the first clamping member 121 can cooperate with the limiting grooves 14 on the second clamping member 122 , And the limiting groove 14 on the first clamping member 121 can cooperate with the limiting edge 13 on the second clamping member 122, so that the clamping member 12 can increase the first clamping member 121, the second clamping member 121 and the second clamping member 122. The contact area of the gripper 122 with the first in-vivo tissue and the manner of changing the morphology of the first in-vivo tissue between the first gripper 121 and the second gripper 122 limit the position of the first in-vivo tissue. Preferably, the setting of the limiting groove 14 can reduce the size of the gap that may exist between the first clamping member 121 and the second clamping member 122 when they are attached to each other, so as to further improve the relationship between the first in vivo tissue and the clamping member. The contact area of the holder 12 enables the clamping force on the first in-vivo tissue to be further dispersed, so as to avoid excessive concentration of the clamping force on the first in-vivo tissue and cause extrusion damage. The mutual cooperation of the position grooves 14 can improve the connection stability between the first internal tissue and the clamping member 12 .

Preferably, the cross-sectional area of the limiting groove 14 is larger than the cross-sectional area of the limiting rib 13 . When the limiting rib 13 fills the limiting groove 14 , there may be an excess space in the cavity of the limiting groove 14 for accommodating the first in-vivo tissue, so that the connection between the first in-vivo tissue and the clamping member 12 is more stable . Preferably, the surfaces of the limiting rib 13 and the limiting groove 14 may also be respectively provided with a plurality of protrusions and grooves distributed evenly at intervals, and the protrusions on the surface of the limiting rib 13 and the grooves on the surface of the limiting groove 14 match each other . When the first clamping member 121 and the second clamping member 122 are attached to each other, the limiting ribs 13 can be filled into the limiting grooves 14, and the protrusions and grooves on the surfaces of the two can further define a zigzag contour. surface, so that the first in vivo tissue sandwiched between the two has a larger contact area and force bearing area.

Preferably, two engaging holes 15 for engaging with the clip applier are provided on the side of the holding part 1 away from the clamping opening 11 . Preferably, the rod bodies of the two intersecting rod members constituting the holding part 1 in the form of the elastic double-arm clip are respectively provided with engaging holes 15 at opposite positions, so that when the clip applier is connected with the engaging holes 15, the doctor can control the application The clip is used to provide an opening force for the holding part 1, and the engaging hole 15 is used to withstand the opening force provided by the clip applier, so that the initially closed clamping port 11 is opened under the action of the opening force, and then the first in vivo tissue to be clamped is opened. Positioned in the open clamping opening 11 . Preferably, a plurality of engaging holes 15 can be provided at even intervals along the axis of the rod body, so that the doctor can control the opening of the clamping port 11 with different opening forces. Preferably, the holding portion 1 is further provided with an elastic member 16 capable of forming a clamping force against the first internal tissue at one end away from the clamping port 11 , and the elastic member 16 can define the shape of the holding portion 1 under the action of no opening force. The clamping port 11 is made to close or clamp the first internal tissue under the action of the clamping force of the elastic member 16 . Preferably, the elastic member 16 can be a torsion spring connected with the ends of the two rod members arranged in a staggered manner, so that under the action of no opening force, the end of the holding portion 1 away from the clamping port 11 can be under the action of the elastic member 16 The lower part is in a stretched state, so that the clamping opening 11 is kept in a closed state under the action of the clamping force generated by the elastic member 16 .

Preferably, the surfaces of the first clamping member 121 and the second clamping member 122 are further provided with an adhesive layer 17 capable of improving adhesion with the first in vivo tissue, and the adhesive layer 17 can further define the first in vivo tissue The configuration in the closed gripping port 11 . Preferably, the surfaces of the limiting ribs 13 and the limiting grooves 14 are also coated with an adhesive layer 17 capable of enhancing adhesion. Preferably, the adhesive layer 17 may also be a medical material capable of swelling to a certain extent by absorbing tissue fluid and mucus flowing out of the first in vivo tissue. Preferably, the adhesive layer 17 contains a polyvinyl alcohol/sodium alginate porous composite material (PACF porous composite material). The PACF with stable double network structure is prepared by compounding the natural polysaccharide sodium alginate (SA) with polyvinyl alcohol (PVA) and by double cross-linking of glutaraldehyde and Ca ²⁺ . The dual network structure not only enables PACF to obtain excellent biocompatibility, but also has the ability to promote the adhesion of blood cells, promote the rapid formation of thrombus and activate the coagulation system, which can be enriched by suction, porous effect and electric charge stimulation Multiple hemostatic mechanisms work synergistically to promote rapid hemostasis. PACF has excellent liquid-triggered self-expansion performance, the expansion ratio exceeds 2000%, and the dynamic expansion force of 3.8N can be generated during the expansion process. Preferably, the PACF porous composite material is prepared by the following method: preparing a PVA aqueous solution with a certain mass fraction, and then adding SA with different mass fractions (different from the mass of PVA) into the PVA solution to form a colloidal mixed solution, and the solution is mixed uniformly and After the state is stable, cool down to room temperature. CaSO4 ( ₁ g) was dissolved in 100 mL of deionized water, left to stand for 30 min, and then centrifuged for 5 min to obtain a supernatant. To the mixture of SA and PVA, add the cross-linking agent solution (the molar ratio of the solute in PVA and the cross-linking agent is 1.25), a small amount of catalyst solution and additives, while increasing the stirring speed. The additive forms a large number of small-diameter bubbles at higher rotational speeds, which are distributed on the surface and inside the liquid. Under the catalysis of the catalyst, the PVA molecule undergoes a cross-linking reaction with the chemical group of the cross-linking agent to form a viscous condensation-cross-linked PVA prepolymer. Subsequently, a certain amount of calcium sulfate solution was added to the prepolymer solution, and Ca ²⁺ could interact with SA in the prepolymer to form SA gel. After sufficient reaction, the viscous prepolymer liquid is poured into the mold, and the porous composite material obtained by freeze-drying is PACF (Polyvinylalcohol/alginate composite foam). Preferably, the adhesive layer 17 forms a layer-film structure capable of controllable expansion in a manner of uniformly coating the surfaces of the first clamping part 121 and the second clamping part 122 with the incompletely solidified PACF, so that the first clamping part When the holding member 121 and the second holding member 122 hold the first in-vivo tissue, the PACF can absorb the tissue fluid and/or mucus flowed out of the first in-vivo tissue and expand to a certain extent, so that the first holding member 121 and the second holding member 122 expand. The holder 122 is capable of gripping the first in vivo tissue with a greater relative force. PACF effectively eliminates the mucus on the surface of the first in-vivo tissue by absorbing and expanding, thereby increasing the friction between the first in-vivo tissue and the first clamping member 121 and the second clamping member 122, so that the first in-vivo tissue The positional movement is less likely to occur, so that the first gripper 121 and the second gripper 122 can more firmly define the position of the first in vivo tissue.

Preferably, the PACF can be more easily separated from the first in vivo tissue after liquid suction, so as to prevent the adhesive layer 17 from being firmly adhered to the surface of the tissue and unable to interact with the first in vivo tissue without tearing the first in vivo tissue separation. and The expansion occurs under the condition of absorbing tissue fluid, so that the first holding member 121 and the second holding member 122 can better hold the first internal tissue. The adhesive layer 17 can remove tissue fluid or mucus on the surface of the first in vivo tissue, so that the friction coefficient between the first clamping member 121 and the second clamping member 122 and the first in vivo tissue is increased, so that the first clamping member 121 and the second clamping member 122 can more stably clamp the first in vivo tissue, and in addition, the expansion of the adhesive layer 17 can compress the first in vivo tissue between the first clamping member 121 and the second clamping member 122. The accommodating space increases the interaction force between the first in vivo tissue and the first clamping member 121 and the second clamping member 122, thereby further defining the relative position between the first in vivo tissue and the clamping member. Preferably, the accommodation space of the first in-vivo tissue is the clearance space between the first clamping member 121 and the second clamping member 122 .

Preferably, the holding part 1 is also connected with an elastic sling 2 capable of pulling the first in-vivo tissue clamped by the clamping port 11 away from its initial position in the patient's body. Preferably, one end of the elastic sling 2 away from the holding part 1 is further connected with a hanging member 3 capable of fixing the elastic sling 2 on the second in vivo tissue away from the liver in a hanging manner. Preferably, the first in vivo tissue can be the hepatogastric ligament and the omental tissue at the edge of the hepatogastric ligament. Since the omental tissue at the edge of the hepatogastric ligament is at the lower edge of the liver, the liver can be achieved by pulling the omental tissue. position changes. In addition, pulling the omental tissue can achieve the pulling effect while avoiding damage to the organ caused by the holding part 1 directly clamping the liver. Preferably, the second in vivo tissue may be the abdominal wall or diaphragm capable of providing traction for the elastic sling 2 and away from the liver. Preferably, the hanger 3 can provide a stable pulling force for the elastic sling 2 by being connected to the abdominal wall or the diaphragm, so that the elastic sling 2 can pull the holding part 1 to move, thereby driving the first body tissue and The position of the liver changes, and then the liver moves away from the upper part of the liver-stomach space under the action of the pulling force. The liver-stomach space can be directly exposed to the doctor's field of vision, which is convenient for the doctor to deal with the tissue structure of the liver-stomach space.

Preferably, when the first internal tissue is clamped by the clamping port 11, the doctor adjusts the hanging position of the hanging member 3 according to the stretching parameters of the elastic sling 2 and the position of the second internal tissue, so that the first internal tissue is The tissue and the left lobe of the liver leave the liver-gastric space under the pulling action of the elastic sling 2. Preferably, a connecting unit 4 capable of defining the position of the elastic sling 2 on the elastic member 16 is further provided on the elastic member 16 of the holding portion 1 , and the connecting unit 4 can pull the elastic sling 2 on the elastic member under the operation of the doctor. 16 to move on the ring body, thereby changing the direction of the pulling force provided by the elastic sling 2. Preferably, the stretching parameters of the elastic sling 2 may include its own length, its own tension and the included angle between it and the holding part 1 . Preferably, the connecting unit 4 may be a connecting ring sleeved on the ring body of the elastic member 16 . Further preferably, the connecting unit 4 can also be configured as a connecting structure capable of moving on the ring body of the elastic member 16 , in particular, the connecting unit 4 can also adjust the pulling direction of the elastic sling 2 .

Example 2

This embodiment is a further improvement to Embodiment 1, and repeated content will not be repeated.

Preferably, the use method of the liver suspension device is as follows:

(1) Put the liver suspension device into the abdominal cavity through laparoscopy.

(2) Engage the clip applier with the engagement hole 15 of the liver suspension device, and transmit the opening force to the holding part 1 of the liver suspension device by the clip applier, so that the clamping port 11 in the closed state is opened.

(3) The first internal tissue is clamped by the clamping port 11, and the elastic sling 2 connected with the holding part 1 is fixed on the second internal tissue away from the liver in a hanging manner, so that the first internal tissue and the The left lobe of the liver leaves the liver-stomach space under the pulling action of the elastic sling 2.

(4) The connection unit 4 adjusts the direction and length of the pulling force provided by the elastic sling 2 according to the tensile parameter of the elastic sling 2 detected by the connecting unit 4 , so as to maintain the exposed state of the liver and stomach gap.

It should be noted that the above-mentioned specific embodiments are exemplary, and those skilled in the art can come up with various solutions inspired by the disclosure of the present invention, and these solutions also belong to the disclosure scope of the present invention and fall within the scope of the present invention. within the scope of protection of the invention. It should be understood by those skilled in the art that the description of the present invention and the accompanying drawings are illustrative rather than limiting to the claims. The protection scope of the present invention is defined by the claims and their equivalents. In the whole text, the features introduced by "preferably" are only an optional way, and should not be construed as a mandatory setting, so the applicant reserves the right to abandon or delete the relevant preferred features at any time.

Claims (10)

1. A laparoscopic liver suspension device comprising at least a holding part (1), characterized in that the holding part (1) holds the liver suspension device in a patient in a hanging manner by clamping it in a first tissue of the patient positioned in the body through a clamping port (11);

the holding part (1) is designed as a spring double-arm clamp, and the clamping opening (11) is provided with clamping elements (12) on its clamping surfaces in such a way that it can define the position of the first internal tissue while holding its form, wherein at least two clamping elements (12) are arranged on two opposite clamping surfaces of the clamping opening (11) that are in contact with the first internal tissue.

2. Laparoscopic liver suspension device according to claim 1, wherein said clamping member (12) is provided with a stop rib (13) on its surface in such a way that it can limit the position of said first intracorporeal tissue clamped by said clamping port (11), wherein,

the clamp (12) comprises a first clamp (121) and a second clamp (122) able to limit the position of the first intracorporeal tissue located within the clamping mouth (11);

the limiting ribs (13) are arranged on the surface of the first clamping piece (121) at intervals along a first direction, the limiting ribs (13) are further arranged on the surface of the second clamping piece (122) at intervals along a second direction, and when the clamping opening (11) is closed, the first clamping piece (121) and the second clamping piece (122) are mutually attached in a mode that the limiting ribs (13) arranged on the surfaces of the first clamping piece and the second clamping piece can be mutually staggered, so that the first tissue in the body is clamped.

3. The laparoscopic liver suspension device according to claim 2, wherein the first holding member (121) and the second holding member (122) further have a limiting groove (14) formed on the surface thereof, respectively, to be engaged with the limiting rib (13),

the surface of the first clamping piece (121) is provided with the limiting grooves (14) at intervals along a second direction in a mode consistent with the arrangement condition of the limiting ribs (13) on the surface of the second clamping piece (122);

the surface of the second clamping piece (122) is provided with the limiting grooves (14) at intervals along a first direction in a mode consistent with the arrangement condition of the limiting ribs (13) on the surface of the first clamping piece (121).

4. The laparoscopic liver suspension device according to claim 3, wherein, when said first clamping member (121) and said second clamping member (122) are engaged with each other, the limiting edge (13) on the first clamping piece (121) can be matched with the limiting groove (14) on the second clamping piece (122), and the limiting groove (14) on the first clamping piece (121) can be matched with the limiting rib (13) on the second clamping piece (122), the clamp (12) can thereby restrict the position of the first internal tissue so as to increase the contact area between the first and second clamps (121, 122) and the first internal tissue and change the clamping state of the first and second clamps (121, 122) to the first internal tissue.

5. Laparoscopic liver suspension device according to claim 4, wherein the holding part (1) is provided with at least one engagement hole (15) for engagement with a clip applier at a side remote from the clamping port (11), said engagement hole (15) being adapted to receive an opening force provided by the clip applier to open said clamping port (11);

the holding part (1) is further provided with an elastic element (16) capable of forming a clamping force for the first in-vivo tissue at one end far away from the clamping opening (11), and the elastic element (16) can define the shape of the holding part (1) under the action of no opening force, so that the clamping opening (11) is closed or clamps the first in-vivo tissue under the action of the clamping force of the elastic element (16).

6. The laparoscopic liver suspension device according to claim 5, wherein the end of the elastic double-arm clamp formed by the holding part (1) far from the clamping port (11) is further connected with an elastic sling (2) capable of pulling the first internal body tissue clamped by the clamping port (11) away from its original position in the patient, and the end of the elastic sling (2) far from the holding part (1) is further connected with a hanger (3) capable of positioning the elastic sling (2) in a hanging manner on a second internal body tissue far from the liver.

7. The laparoscopic liver suspension device according to claim 6, wherein, in the state that the clamping mouth (11) clamps the first internal tissue, the doctor adjusts the hanging position of the hanger (3) according to the stretching parameters of the elastic sling (2) and the position of the second internal tissue, so that the first internal tissue and the left lobe of the liver leave the gap between the liver and the stomach under the pulling action of the elastic sling (2).

8. The laparoscopic liver suspension device according to claim 7, wherein a connection unit (4) capable of defining a position of the elastic sling (2) on the elastic member (16) is further provided on the elastic member (16) of the holding part (1), and the connection unit (4) is capable of pulling the elastic sling (2) to move on the ring body of the elastic member (16) under the operation of a doctor, thereby changing a direction of a pulling force provided by the elastic sling (2).

9. The laparoscopic liver suspension device according to claim 8, wherein the surfaces of said first and second clamping members (121, 122) are further provided with an adhesive layer (17) capable of improving adhesion to the tissue within the first body, said adhesive layer (17) being capable of further defining the configuration of the tissue within the first body in the closed clamping port (11) in such a way that the accommodation space of the tissue within the first body is compressed by imbibition of liquid.

10. A laparoscopic liver suspension device comprising at least two clamps (12) defining the position of a first tissue in vivo in an oppositely disposed manner, characterized in that,

the clamping piece (12) is provided with a limiting edge (13) on the surface thereof according to the mode that the clamping piece can limit the position of the first in-body tissue clamped by the clamping opening (11), wherein,

the clamp (12) comprises a first clamp (121) and a second clamp (122) able to limit the position of the first intracorporeal tissue located within the clamping mouth (11);

the limiting ribs (13) are arranged on the surface of the first clamping piece (121) at intervals along a first direction, the limiting ribs (13) are further arranged on the surface of the second clamping piece (122) at intervals along a second direction, and when the clamping opening (11) is closed, the first clamping piece (121) and the second clamping piece (122) are mutually attached in a mode that the limiting ribs (13) arranged on the surfaces of the first clamping piece and the second clamping piece can be mutually staggered, so that the first tissue in the body is clamped.

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