CN113812999B

CN113812999B - Clamp system based on elastic metal

Info

Publication number: CN113812999B
Application number: CN202111005891.6A
Authority: CN
Inventors: 勾善淼
Original assignee: Individual
Current assignee: Wuhan Weirun Bafang Medical Technology Co ltd
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2023-03-14
Anticipated expiration: 2041-08-30
Also published as: CN113812999A

Abstract

The invention discloses a clamping system based on elastic metal, which comprises: a clamping part and an ejection power part. The vascular clamp in the forceps holder system is made of elastic metal, the tail part of the vascular clamp is connected by an arc-shaped ring, elasticity is generated by depending on the shape of the tail part, the holding part and the ejection power part are synchronously controlled by the grab handle, the release of the vascular clamp is realized, the friction force of the tissue is not influenced no matter whether the tissue is edematous or not after the release, excessive force shaping is not needed, the risk of breaking the inner membrane by using a homolok does not exist, and a blocking part is arranged at the connecting part of the arc-shaped ring of the vascular clamp and the two elastic clamping pieces and can prevent the tissue from entering a tension-free area (an area in the arc-shaped ring) of the vascular clamp to lose the effect; the forceps holder system has the advantages of ingenious structural design, simple operation and convenient use, can effectively protect tissues from being damaged by the vascular clamp when being released slowly, and can ensure that the vascular clamp is suitable for occasions with very thick tissues or low excessive pressure due to the design of the middle shaft of the forceps holder system; the front of the tissue can use the vascular clamp without penetrating, thereby reducing the operation difficulty.

Description

Clamp system based on elastic metal

Technical Field

The invention relates to the technical field of surgical instruments, in particular to a forceps holder system based on elastic metal.

Background

With the development of endoscopic technology and other technologies, endoscopic hemostasis has become the first choice treatment method for the treatment of digestive tract hemorrhage. The conventional hemostasis methods include laser coagulation, electrocoagulation and the like, and vascular clamps and the like. Among them, the vascular clamp method has become the most effective and clinically applicable method for hemostasis because of its advantages of small trauma, high hemostasis speed, low incidence of re-bleeding, etc.

Various clamping systems are one of the most widely applied instruments in the current minimally invasive surgery, are mainly used for clamping vascular tissues to achieve the purpose of hemostasis, are also used for fixing tissues and sutures in few cases, and are occasionally used for an open abdomen surgery which is mainly used for hemostasis of a part which is difficult to suture and stop bleeding due to narrow space.

The following three types of clamping systems are currently available: plastic clips (most widely used), titanium clips, and absorptive clips such as Hemolok.

(1) Hemolok and other plastic clips (the most widely used)

The advantages are that: the structure is simple and reliable, and the manufacturing cost is relatively low;

the method has the following defects: 1 the clamping can be realized only after the opposite side is completely penetrated; 2, the clamp is larger, which affects the operation; 3, the ultrasonic knife cannot be operated close to the clamp too much, and the heat of the ultrasonic knife can damage the clamp to cause falling off; 4, the clamping force on the artery is too large, and the risk of intimal injury exists;

5 occasionally there was a mechanical failure, with the front jaw structure hanging on the tissue.

(2) Titanium clip:

the advantages are that: the structure is small, the operation is not influenced, and the front part does not need to penetrate through;

and (3) defect: the titanium clip is of a plastic structure, is already shaped after clamping tissues, has low friction, is easy to take away by other operations in the operation, is easy to fall off along with the occurrence of tissue edema and the fading process, is unsafe, needs to be sutured again, and is generally only used for temporary hemostasis.

(3) Absorbing and clamping:

the advantages are that: the clip does not need to be taken out subsequently and can be absorbed;

and (3) defect: the structure is complicated, the whole is bigger, the operation is easily influenced, and the fine structure is difficult to use.

Disclosure of Invention

The present invention aims to overcome the above technical deficiencies and to provide a resilient metal based clamping system that solves at least one of the technical problems set forth in the background.

In order to achieve the above technical object, an aspect of the present invention provides a clip system based on elastic metal, including:

the vascular clamp comprises two elastic clamping pieces, and the tail parts of the two elastic clamping pieces are connected by adopting an arc-shaped ring;

the clamping part is used for clamping the vascular clamp and can drive the vascular clamp to open/close;

the ejection power part can drive the vascular clamp to be separated from the clamping part;

the control part controls the clamping part and the ejection power part to move through the handheld pressing mechanism.

Furthermore, the connection part of the arc-shaped ring of the vascular clamp and the two elastic clamping pieces is provided with a blocking part which can prevent tissues from entering the area in the arc-shaped ring of the vascular clamp.

Furthermore, the clamping part comprises a first clamping head and a second clamping head, and the first clamping head is movably connected with the second clamping head.

Furthermore, the ejection power part is a middle shaft, and the motion track of the middle shaft is parallel to the axis of the middle shaft.

Furthermore, the control part comprises a push-pull pipe and a fixed pipe, the middle shaft, the push-pull pipe and the fixed pipe are all arranged along the axial direction of the middle shaft, and both the middle shaft and the push-pull pipe can slide along the axial direction of the fixed pipe relative to the fixed pipe; the middle shaft can slide along the axial direction of the push-pull pipe relative to the push-pull pipe, the first clamping head or/and the second clamping head is/are hinged with the head end of the fixed pipe, and the axial movement of the push-pull pipe along the fixed pipe can drive the clamping parts to open/close.

Furthermore, the control part further comprises a handheld pressing mechanism, the handheld pressing mechanism comprises a grab handle, a first connecting rod and a second connecting rod, one end of the grab handle is hinged to the tail end of the fixing pipe, one end of the first connecting rod is hinged to the middle shaft, the other end of the first connecting rod is hinged to the grab handle, one end of the second connecting rod is hinged to the push-pull pipe, and the other end of the second connecting rod is hinged to the grab handle.

Furthermore, when the grab handle deflects relative to the fixed pipe, the first connecting rod drives the middle shaft to move towards a first direction, the second connecting rod drives the push-pull pipe to move towards a second direction, and the second direction and the first direction are opposite to each other.

Furthermore, grab handle, first connecting rod, second connecting rod all are provided with two, two grab handle, two first connecting rod, two the equal symmetry of second connecting rod set up in the both sides of fixed pipe.

Furthermore, ejecting power portion still includes first elastic component, the at least one end of first elastic component is connected with one the grab handle, when the grab handle is relative when fixed pipe deflects, first elastic component is right the grab handle produces first moment of torsion, first moment of torsion with the motion direction of grab handle is opposite.

Furthermore, the middle shaft comprises a first connecting shaft and a second connecting shaft, and the first connecting shaft is elastically connected with the second connecting shaft through a second elastic piece.

Compared with the prior art, the invention has the beneficial effects that: the vascular clamp in the forceps holder system based on the elastic metal is made of the elastic metal and comprises two elastic clamping pieces, the tails of the two elastic clamping pieces are connected through an arc-shaped ring, the elastic force is generated by the shape of the tail, the clamping part and the ejection power part are synchronously controlled through the grab handle, the release of the vascular clamp is realized, the friction force of the released vascular clamp is not influenced no matter whether tissues are edematous or not, excessive force shaping is not needed, the risk that the inner membrane is broken through by the hemolok does not exist, the connecting part of the arc-shaped ring of the vascular clamp and the two elastic clamping pieces is provided with a blocking part, and the blocking part can prevent the tissues from entering an unstressed area (an area in the arc-shaped ring) of the vascular clamp to lose the effect; the forceps holder system has the advantages of ingenious structural design, simplicity in operation and convenience in use, the tissue can be effectively protected from being damaged by the vascular clamp when the forceps holder system is released slowly, and the vascular clamp can be suitable for occasions with very thick tissues or occasions where excessive pressure is not suitable for due to the design of the middle shaft of the forceps holder system; the front of the tissue can use the vascular clamp without penetrating, the use is convenient, and the operation difficulty is reduced.

Drawings

FIG. 1 is a schematic diagram of one embodiment of a resilient metal-based clamping system according to the present invention;

FIG. 2 is a schematic structural view of a vascular clamp provided in accordance with the present invention;

FIG. 3 is a schematic structural view of a head end of one embodiment of a resilient metal-based clamping system in accordance with the present invention;

FIG. 4 is an enlarged, partial, schematic structural view of the head end clamping portion of one embodiment of the resilient metal-based vise system of the present invention;

FIG. 5 is a schematic cross-sectional view of a head end of one embodiment of a resilient metal-based clamping system provided in accordance with the present invention;

FIG. 6 is a schematic diagram illustrating the grip position of one embodiment of a resilient metal-based clamping system provided in accordance with the present invention;

FIG. 7 is a schematic diagram of a trigger-type structure employed by the hand press portion of the resilient metal-based clamping system of the present invention;

FIG. 8 is a schematic diagram illustrating the construction of another embodiment of a resilient metal-based clamping system provided in accordance with the present invention;

FIG. 9 is an enlarged schematic view of the head end of FIG. 8;

fig. 10 is a partially enlarged structural view of the connection portion of the second elastic member in fig. 9.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 10, the present embodiment provides a clamping system based on elastic metal, including: vascular clamp, clamping part, ejecting power portion, control unit.

The clamping part is used for clamping the vascular clamp a and can drive the vascular clamp a to open/close, and the ejection power part is movably connected with the clamping part and can drive the vascular clamp a to be separated from the clamping part.

In this embodiment, the clamping portion includes a first clamping head 11 and a second clamping head 12, the first clamping head 11 is movably connected with the second clamping head 12, the ejection power portion includes a central shaft 21, the control portion includes a push-pull pipe 22 and a fixed pipe 23, the central shaft 21, the push-pull pipe 22 and the fixed pipe 23 are all arranged along the same axial direction, and both the central shaft 21 and the push-pull pipe 22 can slide along the axial direction of the fixed pipe 23 relative to the fixed pipe 23; and the central shaft 21 can slide along the axial direction of the push-pull pipe 22 relative to the push-pull pipe 22, the first clamping head 11 or/and the second clamping head 12 is/are hinged with the head end of the fixed pipe 23, and the head end of the push-pull pipe 22 is in driving connection with the clamping part and can drive the clamping part to open/close.

In this embodiment, the tails of the first and

second collets

11 and 12 are hinged to the head end of the fixed tube 23, and the first and

second collets

11 and 12 together form a pincer-like structure for clamping the vascular clamp a.

Specifically, the head ends of the first chuck 11 and the second chuck 12 are all provided with docking posts 1a, the vascular clamp a includes two elastic clamping pieces a1, the tails of the two elastic clamping pieces a1 are connected by an arc-shaped ring a2, and elasticity is generated by the shape of the tail, specifically, the arc-shaped ring a2 is a major arc, and two the back sides of the head ends of the two elastic clamping pieces a1 are all provided with docking holes a3 for docking the docking posts.

In this embodiment, the ejecting power portion is a middle shaft 21, a motion track of the middle shaft 21 is parallel to an axis thereof, the control portion further includes a handheld pressing mechanism, the handheld pressing mechanism includes a handle 24, a first connecting rod 25, and a second connecting rod 26, one end of the handle 24 is hinged to the tail end of the fixed tube 23, one end of the first connecting rod 25 is hinged to the middle shaft 21, the other end of the first connecting rod 25 is hinged to the handle 24, one end of the second connecting rod 26 is hinged to the push-pull tube 22, and the other end of the second connecting rod 26 is hinged to the handle 24, when the handle 24 deflects relative to the fixed tube 23, the first connecting rod 25 drives the middle shaft 21 to move in a first direction, the second connecting rod 26 drives the push-pull tube 22 to move in a second direction, and the second direction is opposite to the first direction.

Specifically, the grab handles 24, the first connecting rods 25 and the second connecting rods 26 are respectively provided with two grab handles 24, two first connecting rods 25 and two second connecting rods 26 are respectively symmetrically arranged at two sides of the fixed pipe 23.

In another embodiment, the hand-held pressing portion may be replaced with a trigger-type structure as shown in fig. 7.

The ejection power part further comprises a first elastic member 27, at least one end of the first elastic member 27 is connected with one of the handles 24, when the handle 24 deflects relative to the fixing tube 23, the first elastic member 27 generates a first torque to the handle 24, and the first torque is opposite to the movement direction of the handle 24.

In this embodiment, the first elastic member 27 is a spring, and two ends of the first elastic member 27 are respectively connected to the two handles 24.

The middle shaft 21 includes a first connecting shaft 211 and a second connecting shaft 212, the first connecting shaft 211 is elastically connected to the second connecting shaft 212 through a second elastic element 28, in this embodiment, the second elastic element 3 is a spring; in another embodiment, a core shaft 29 is fixed at a tail of the first connecting shaft 211, the second elastic member 28 is sleeved on the core shaft 29, the second connecting shaft 212 is a tube body, the second connecting shaft 212 is slidably sleeved on the core shaft 29, one end of the second elastic member 28 abuts against the first connecting shaft 211, the other end of the second elastic member 28 abuts against the second connecting shaft 212, and a tail end of the core shaft 29 extends out of the fixed tube 23 and a tail end of the second connecting shaft 212.

When the handle 24 is opened, the clamping part is opened; when the grab handle 24 is closed, the clamping part is closed, and when the clamping part is opened, the ejection power part can eject the vascular clamp a out for clamping.

For the convenience of the reader to understand the technical solution, in this embodiment, a driving connection manner between the head end of the push-pull tube 22 and the clamping portion is illustrated, in a specific design, a linear motion of the push-pull tube 22 needs to be converted into a rotation of the first chuck 11 or/and the second chuck 12, in order to make a transmission structure as simple and compact as possible, the push-pull tube 22 needs to directly drive the first chuck 11 or/and the second chuck 12 to rotate, taking driving the first chuck 11 to rotate relative to the fixed tube 23 as an example, since the push-pull tube 22 cannot directly act on a rotation shaft of the first chuck 11, an extension section 11a is provided at the tail of the first chuck 11, an arc-shaped groove 11b is provided on the extension section 11a, the head end of the push-pull tube 22 is provided with a sliding pin 22a, the sliding pin 22a is slidably connected with the arc-shaped groove 11b, and is constrained to make a degree of freedom of motion of pushing the first chuck 11 to be 1, a shape of the arc-pull tube 11 (that the sliding pin 22a first motion trajectory of the sliding pin 22a relative to the fixed tube 22a relative to the first chuck 11) is a trajectory, and a trajectory of motion of the second chuck 11b is obtained by subtracting a synchronous motion equation of the second chuck 11, and a motion equation of a synchronous motion of the second chuck 11, which is obtained after the first chuck 11 and a motion trajectory of the second chuck 11.

The vascular clamp a in the forceps holder system based on the elastic metal is made of the elastic metal, the vascular clamp a comprises two elastic clamping pieces a1, the tails of the two elastic clamping pieces a1 are connected through an arc-shaped ring a2, elasticity is generated by the shape of the tail, a holding part and an ejection power part are synchronously controlled through a grab handle 24, the release of the vascular clamp a is realized, the friction force of the tissue is not influenced no matter whether the tissue is edematous or not after the release, excessive shaping is not needed, the danger that the inner membrane is broken by the aid of the hemolok does not exist, a blocking part a4 is arranged at the connecting part of the arc-shaped ring a2 of the vascular clamp a and the two elastic clamping pieces a1, and the blocking part a4 can prevent the tissue from entering a tension-free area (an area in the arc-shaped ring a 2) of the vascular clamp a to lose effect; the forceps holder system has the advantages of ingenious structural design, simple operation and convenient use, can effectively protect tissues from being damaged by the vascular clamp a when being released slowly, and can ensure that the vascular clamp a is suitable for occasions with very thick tissues or low excessive pressure due to the design of the middle shaft 21 of the forceps holder system; the front of the tissue can use the vascular clamp a without penetrating, the use is convenient, and the operation difficulty is reduced.

The working principle is as follows: when the blood vessel clamp a is in a clamping state, the clamping part is in an opening state at a certain angle, the grab handle 24 is manually clamped firstly, then the blood vessel clamp a is arranged in the clamping part, the butt-joint column 1a on the clamping part is inserted into the butt-joint hole a3 of the blood vessel clamp a to complete locking, at the moment, the first connecting shaft 211 is propped by the blood vessel clamp a to retreat, the first elastic part 27 is compressed, then the grab handle 24 is loosened, the grab handle 24 opens under the action of the second elastic part 28, the blood vessel clamp a is driven by the clamping part to enter the opening state, at the moment, the second connecting shaft 212 retreats, and the first elastic part 27 slowly restores to the balance state;

and then the vessel clamp a carried by the clamp system in the open state is sent to a required position, the grab handle 24 of the clamp system is clamped, the vessel clamp a is slowly closed until the tissue is clamped, at the moment, the clamp of the grab handle 24 drives the central shaft 21 to push out the vessel clamp a, the release is completed, and then the clamping part is removed.

In most cases, the vascular clamp a can be smoothly released in the process, and in few cases, when the tissue is thick or the pressure is not suitable to be too high, the mandrel 29 can be manually pushed, so that the first connecting shaft 211 can continuously advance, and the vascular clamp a is pushed to complete the release.

The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A resilient metal-based clamping system, comprising:

the ejection power part can drive the vascular clamp to be separated from the clamping part, the ejection power part is a middle shaft, and the motion track of the middle shaft is parallel to the axis of the middle shaft;

the control part controls the clamping part and the ejection power part to move through a handheld pressing mechanism, the control part comprises a push-pull pipe and a fixed pipe, the middle shaft, the push-pull pipe and the fixed pipe are all arranged along the axial direction of the middle shaft, and the middle shaft and the push-pull pipe can both correspond to the fixed pipe and slide along the axial direction of the fixed pipe; the middle shaft can slide along the axial direction of the push-pull pipe relative to the push-pull pipe, the clamping part comprises a first chuck and a second chuck, the first chuck is movably connected with the second chuck, the first chuck or/and the second chuck is/are hinged with the head end of the fixed pipe, and the push-pull pipe can drive the clamping part to open/close along the axial movement of the fixed pipe.

2. The resilient metal-based clamping system according to claim 1, wherein the connection of the arcuate ring of the vascular clamp to the two resilient jaws is provided with a barrier that prevents tissue from entering the area within the arcuate ring of the vascular clamp.

3. The resilient metal-based jaw system of claim 1, wherein said control portion further comprises a hand-held depressing mechanism, said hand-held depressing mechanism comprising a handle, a first link, a second link, one end of said handle being hinged to said tail end of said stationary tube, one end of said first link being hinged to said center shaft, the other end of said first link being hinged to said handle, one end of said second link being hinged to said push-pull tube, the other end of said second link being hinged to said handle.

4. The resilient metal-based clamping system according to claim 3, wherein upon deflection of said grip relative to said stationary tube, said first link drives said middle shaft in a first direction and said second link drives said push-pull tube in a second direction opposite said first direction.

5. The resilient metal-based jaw system of claim 4, wherein there are two of said handles, first links, and second links, and wherein there are two of said handles, two of said first links, and two of said second links symmetrically disposed on either side of said stationary tube.

6. The resilient metal-based clamping system according to claim 4, wherein the ejection power section further comprises a first resilient member, the first resilient member being coupled at least at one end to a grip of the handle, the first resilient member producing a first torque on the grip when the grip is deflected relative to the stationary tube, the first torque being opposite to a direction of movement of the grip.

7. The resilient metal-based clamping system according to claim 4, wherein said central shaft includes a first connecting shaft, a second connecting shaft, said first connecting shaft being resiliently connected to said second connecting shaft by a second resilient member.