CN110236634B - Memory alloy detachable hemostatic forceps device - Google Patents

Abstract

The invention provides a memory alloy type separable hemostatic forceps device, comprising: a collet, including a rotating forceps head and a fixed forceps head connected by a memory alloy wire, and a tail pipe fixed with a connecting part of the rotating forceps head and the fixed forceps head; The assembly includes a first sleeve with a tail pipe inserted at the end, a push rod passing through the inside of the first sleeve and used to push the chuck, a liquid nitrogen exchange bin arranged at the front end of the first sleeve, and a The liquid nitrogen circulation pipe on the upper and lower sides of the inner wall of a set of pipes and connected with the liquid nitrogen exchange chamber, the restriction ring arranged at the end of the liquid nitrogen exchange chamber, and the first coil wound around the liquid nitrogen circulation pipe arranged between the restriction ring and the push rod. Electric heating wire; and a pliers assembly, including a second sleeve consisting of a hollow section at the front end for inserting the tail pipe after use and a solid section arranged behind the hollow section, and a second sleeve provided at the position of the tail rod and attached to the first sleeve. The second heating wire of the inner wall of the hollow part of the two sleeves. The invention has the advantages of low cost, simple principle, convenient use and good hemostatic effect.

Description

Memory alloy detachable hemostatic forceps device

technical field

The invention relates to a hemostatic forceps, in particular to a memory alloy type separable hemostatic forceps device.

Background technique

Minimally invasive surgery refers to surgery that causes minimal trauma to the human body during surgery, and is various types of surgery that use laparoscopy or tiny incisions for treatment. Traditional surgical incisions are particularly large, and at the same time, due to the extensive separation of tissues, more muscles, blood vessels and corresponding nerves are damaged, which is likely to cause complications. Compared with traditional surgery, minimally invasive surgery has the characteristics of smaller wound, less pain, faster recovery, shorter hospital stay and less bleeding, which greatly reduces the inconvenience and pain caused by surgery to patients.

With the development of modern technology, abdominal surgery has successfully shifted from traditional surgical laparotomy to minimally invasive, even non-invasive minimally invasive surgery. During the operation, the doctor needs to hold the blood vessels next to the tissue for a long time with ordinary hemostatic forceps. When the blood supply is blocked, it is easy to cause fatigue and pain in the doctor's fingers, palm, wrist and shoulder. Moreover, for multiple bleeding points, multiple traditional hemostatic forceps are required, which greatly occupies a limited incision space, which is very unfavorable for surgical operations and reduces patient damage.

SUMMARY OF THE INVENTION

The present invention is made to solve the above-mentioned problems, and aims to provide a memory alloy type separable hemostatic forceps device.

The present invention provides a memory alloy type separable hemostatic forceps device, which has the following characteristics: a collet, including a rotating forceps head and a fixed forceps head connected by a memory alloy wire, and a fixed connection between the rotating forceps head and the fixed forceps head The tail tube of the site; the placement assembly is used to place the collet at the place where hemostasis is required for hemostasis, including a first cannula with a tail tube inserted at the end, a push rod passing through the inside of the first cannula and used to push the collet , the liquid nitrogen exchange chamber arranged at the front end of the first casing, the liquid nitrogen circulation pipes arranged on the upper and lower sides of the inner wall of the first casing and connected with the liquid nitrogen exchange The restriction ring that is stuck on the tail pipe and the first heating wire wound around the liquid nitrogen flow pipe arranged between the restriction ring and the push rod; and a clamp assembly for removing the used collet at the place where hemostasis is required , including a second casing consisting of a hollow section at the front end for inserting the used tail pipe and a solid section arranged behind the hollow section, and a hollow section that is fitted to the second casing at the place where the tail rod is located. The second heating wire on the inner wall, wherein one end of the push rod is provided with a push rod head contacting with the tail pipe, and the other end is provided with a push-pull handle for pushing and pulling to apply thrust, and the end of the tail pipe is coated with a layer of magnetic material, the second set of The inner wall of the hollow section of the tube is provided with a permanent magnet that attracts each other with the magnetic material layer, and the phase transition temperature of the memory alloy wire is 70°C, so that the first electric heating wire undergoes a phase transition when the external power supply is turned on and heats up to 70°C, thereby The collet is opened, and then the first liquid nitrogen flow pipe sprays liquid nitrogen to cool the memory alloy wire until the memory alloy wire is close together, the collet is closed, and then the push rod is pushed to make the collet fall off, and the tail pipe of the collet that has fallen off after use enters The hollow section of the second sleeve passes through the second heating wire, and then the magnetic material layer and the permanent magnet attract each other, thereby temporarily fixing the collet that has fallen off after use, and then connecting the external power source, so that the second heating wire generates heat by heating , and transmitted to the tail pipe, and then transmitted to the memory alloy wire to open the collet, so as to remove the collet from the hemostasis.

In the memory alloy type separable hemostatic forceps device provided by the present invention, it can also have the following feature: wherein, the opening and closing angle of the collet is 0°˜45°.

In the memory alloy type separable hemostatic forceps device provided by the present invention, it can also have the following feature: wherein the collet is a one-time-use collet.

In the memory alloy type separable hemostatic forceps device provided by the present invention, it may also have the following feature: wherein, the outer surface of the first sleeve and the outer surface of the second sleeve are both coated with a heat-insulating coating.

In the memory alloy type separable hemostatic forceps device provided by the present invention, it may also have the feature that the diameter of the confinement ring is smaller than the diameter of the tail pipe.

The role and effect of the invention

According to the memory alloy type separable hemostatic forceps device of the present invention, because the memory alloy wire in the collet is small in volume, the collet can be made smaller, more precise and more flexible, and it is convenient to adjust the position of the collet in the abdominal cavity. Clamping angle and inclination angle; because the clamp assembly has a liquid nitrogen exchange bin, a liquid nitrogen flow tube and an electric heating wire, it can play the role of cooling and heating, so that the memory alloy wire in the chuck can be generated under the action of temperature changes. Phase change, so that the collet opens and closes; because the placing assembly is provided with a limiting ring, it can form friction with the collet, so that the collet is not easy to fall out; because the hollow section of the second sleeve of the pliers assembly Some permanent magnets can attract each other with the magnetic material layer at the end of the tail pipe, so the collet that has fallen off after use can be temporarily fixed, and because the tail pipe passes through the heating wire, the heat generated by the heating wire can be transferred to the The tail pipe is then passed to the memory alloy wire to make the collet open.

Therefore, the memory alloy type separable hemostatic forceps device of the present invention has low cost, simple principle, convenient use, and can perform hemostasis well. In addition, the memory alloy type separable hemostatic forceps device of the present invention adopts a small size of the collet, and is more convenient to use. Accurate and more flexible, it is easy to adjust the clamping angle and inclination angle of the collet in the abdominal cavity, so it can retain the operable space for minimally invasive surgery, so as not to interfere with the operation.

Description of drawings

1 is a schematic structural diagram of a collet of a memory alloy type separable hemostatic forceps device according to an embodiment of the present invention;

2 is a schematic view of the opening of the collet of the memory alloy type separable hemostatic forceps device in the embodiment of the present invention;

3 is a schematic diagram of the closure of the collet of the memory alloy type separable hemostatic forceps device according to the embodiment of the present invention;

4 is a schematic structural diagram of a memory alloy wire of a memory alloy type separable hemostatic forceps device according to an embodiment of the present invention;

Fig. 5 is the principle schematic diagram of the memory alloy wire of the memory alloy type separable hemostatic forceps device in the embodiment of the present invention;

6 is a schematic perspective view of the memory alloy type detachable hemostatic forceps device when the collet is placed in the placement assembly according to the embodiment of the present invention;

7 is a schematic view of the memory alloy type separable hemostatic forceps device when the collet is placed in the placement assembly according to the embodiment of the present invention;

8 is a schematic structural diagram of a memory alloy wire placement assembly of a memory alloy type separable hemostatic forceps device according to an embodiment of the present invention;

9 is a partial structural schematic diagram of a placement component of a memory alloy type separable hemostatic forceps device according to an embodiment of the present invention;

10 is a partial three-dimensional structural schematic diagram of the placement component of the memory alloy type separable hemostatic forceps device according to the embodiment of the present invention;

11 is a schematic diagram of the clip-taking assembly of the memory alloy type separable hemostatic forceps device in the embodiment of the present invention taking the chuck;

12 is a schematic structural diagram of a forceps removal assembly of a memory alloy type separable hemostatic forceps device according to an embodiment of the present invention;

13 is an enlarged schematic diagram of a partial structure of a forceps removal assembly of a memory alloy type separable hemostatic forceps device in an embodiment of the present invention.

Detailed ways

In order to make the technical means and effects realized by the present invention easy to understand, the present invention will be described in detail below with reference to the embodiments and the accompanying drawings.

Example:

A memory alloy type separable hemostatic forceps device of this embodiment includes: a collet 10 , a placement assembly 20 and a forceps removal assembly 30 .

1 is a schematic structural diagram of the collet of the memory alloy type separable hemostatic forceps device in the embodiment of the present invention, FIG. 2 is a schematic view of the collet opening of the memory alloy type separable hemostatic forceps device in the embodiment of the present invention, FIG. 3 4 is a schematic diagram of the structure of the memory alloy wire of the memory alloy type separable hemostatic forceps device in the embodiment of the present invention, and FIG. A schematic diagram of the principle of the memory alloy wire of the memory alloy type separable hemostatic forceps device in the embodiment of the invention.

The collet 10 includes a rotating forceps head 12 and a fixed forceps head 13 connected by a memory alloy wire 11 , and a tail pipe 14 to which the connecting portion of the rotating forceps head 12 and the fixed forceps head 13 is fixed.

The collet is 10 disposable collets, and its opening and closing angle is 0°-45°. When the collet is dropped, manually insert a new collet 10 after the push rod is pulled out from the first casing.

The phase transition temperature of the memory alloy wire 11 is about 70°C, so that the phase transition occurs when the first heating wire is connected to the external power supply and heated to about 70°C, so that the chuck 10 is opened, and then the liquid nitrogen flow pipe is sprayed with liquid nitrogen for cooling. The memory alloy wires 11 are closed until the memory alloy wires 11 are close together, and the collet 10 is closed, and then the push rod is pushed to make the collet 10 fall off.

The memory alloy wire 11 is made of a special alloy, and its shape is similar to a leaf spring. It can be a nickel-titanium alloy or other alloys. Among them, the nickel-titanium alloy has a memory effect and can freely convert between austenite and martensite at different temperatures. , and the deformation temperature can be controlled by adjusting the content of nickel in the alloy.

In this embodiment, the memory alloy wire 11 maintains the first parent phase at room temperature, that is, about 40°C, and the chuck 10 is kept in a closed state at this time. It is transformed into the second mother phase, so that the collet 10 is opened, so as to ensure a good opening and closing state of the collet. In addition, the response time of the memory alloy wire 11 is about one second, and the memory alloy wire 11 is at 40 ℃ to 70 ℃. maintain the deformed state.

The tail pipe 14 is made of a thermally conductive material with a very low specific heat capacity, and the end of the tail pipe 14 is coated with a magnetic material layer 15 .

FIG. 6 is a perspective view of the collet of the memory alloy type separable hemostatic forceps device in the embodiment of the present invention when the collet is placed in the placement assembly, and FIG. 7 is the collet of the memory alloy type separable hemostatic forceps device in the embodiment of the present invention. A schematic diagram when it is placed in the placement component, FIG. 8 is a schematic structural diagram of the memory alloy wire placement component of the memory alloy type separable hemostatic forceps device in the embodiment of the present invention, and FIG. 9 is the memory alloy type in the embodiment of the present invention. A partial structural schematic diagram of the placing assembly of the detachable hemostatic forceps device, FIG. 10 is a partial three-dimensional structural schematic diagram of the placing assembly of the memory alloy type separable hemostatic forceps device in the embodiment of the present invention.

As shown in FIGS. 6 to 10 , the placement assembly 20 is a syringe-type push-pull structure for placing the collet 10 at the place where hemostasis is required for hemostasis, including the first sleeve 21 with the tail tube 14 inserted at the end, passing through The push rod 22 inside the first sleeve 21 and used to push the collet 10, the liquid nitrogen exchange chamber 23 disposed at the front end of the first sleeve 21, the upper and lower sides of the inner wall of the first sleeve 21 and the The liquid nitrogen circulation pipe 24 connected to the liquid nitrogen exchange chamber 23, the restriction ring 25 arranged at the end of the liquid nitrogen exchange chamber 23 for clamping the tail pipe 14, and the circulation around the liquid nitrogen arranged between the restriction ring 25 and the push rod 22 The first heating wire 26 around which the tube 24 is wound.

One end of the push rod 22 is provided with a push rod head 2201 in contact with the tail pipe, and the other end is provided with a push-pull handle 2202 for pushing and pulling to exert a pushing force.

The diameter of the confinement ring 25 is smaller than the diameter of the tail pipe 14 .

FIG. 11 is a schematic diagram of the forceps removal assembly of the memory alloy type separable hemostatic forceps device in the embodiment of the present invention when the clamp is removed, and FIG. 12 is the structure of the forceps removal assembly of the memory alloy type separable hemostatic forceps device in the embodiment of the present invention. Schematic diagram, FIG. 13 is an enlarged schematic view of the partial structure of the forceps removing component of the memory alloy type separable hemostatic forceps device in the embodiment of the present invention.

As shown in FIG. 11-FIG. 13, the forceps removal assembly 30 is used to remove the collet 10 that has fallen off after use at the place where hemostasis is required, including the tail tube 14 at the front end for inserting the collet 10 that has fallen off after use. The second sleeve 31 composed of the hollow section 3101 and the solid section 3102 disposed behind the hollow section 3101 and the second electric heating wire disposed at the position of the tail rod 14 and fitted to the inner wall of the hollow section 3101 of the second sleeve 31 32.

The inner wall of the hollow section 3101 of the second sleeve 31 is provided with a permanent magnet 33 that is attracted to the magnetic material layer 15 at a position close to the solid section 3102 .

After use, the tail tube 14 of the collet 10 that has fallen off enters the hollow section 3101 of the second sleeve 31 and passes through the second heating wire 32, and then the magnetic material layer 15 and the permanent magnet 33 attract each other, thereby temporarily fixing the after use. The collet 10 that has fallen off is then connected to an external power source, so that the second heating wire 32 generates heat, which is transmitted to the tail pipe 14, and then transmitted to the memory alloy wire 11 to open the collet 10, thereby removing the collet 10 from the hemostasis. take out.

The outer surface of the first sleeve 21 and the outer surface of the second sleeve 31 are both coated with a heat-insulating coating, and the inner surface of the first sleeve 21 and the inner surface of the second sleeve 31 have better thermal conductivity and higher strength. , Special material resistant to thermal shock, thus overcoming fatigue damage caused by thermal shock caused by higher temperature changes and micro deformation caused by expansion.

The working process of the memory alloy type separable hemostatic forceps device of the present embodiment:

In the memory alloy type separable hemostatic forceps device of this embodiment, the tail tube 14 of the collet 10 is put into the first sleeve 21, and the tail tube 14 of the collet 10 is clamped by the restriction ring 25, and then the external The power supply causes the first heating wire 26 to heat up, the memory alloy wire 11 changes its initial shape, so that the chuck 10 is opened, and then liquid nitrogen is sprayed through the liquid nitrogen flow pipe 24 to cool the memory alloy wire 11, so that the memory alloy wire 11 closes together, and then the chuck 10 is closed. After the chuck 10 is closed, a force is applied to the push-pull handle 2202 so that the push rod head 2201 can withstand the pressure of the end tube 14 of the chuck 10 to break through the interference fit of the restriction ring 25, and then fall off, and then install it in the placement assembly 20. Put on a new collet 10 for use. After the bleeding stops, use the permanent magnet 33 of the forceps assembly to attract the magnetic material layer 15 at the end of the tail pipe 14, temporarily fix the collet 10 in the second sleeve 31, and then turn on the external power supply to make the second heating wire 32. When the heat is generated, the memory alloy wire 11 changes its initial shape, so that the collet 10 is opened and separated from the hemostasis, and then the used collet 10 is manually removed from the forceps removal assembly. Head 10 is removed.

In addition, since the memory alloy type separable hemostatic forceps device of this embodiment has a large temperature difference during use and is prone to thermal shock damage, it needs to be tested regularly after multiple uses to ensure its safety and effectiveness. sex is assessed.

Action and effect of the embodiment

According to the memory alloy type separable hemostatic forceps device involved in this embodiment, because the memory alloy wire in the collet is small in volume, the collet can be made smaller, more accurate, and more flexible, and it is convenient to adjust the collet in the abdominal cavity The clamping angle and inclination angle of the clamps; because the pliers assembly has a liquid nitrogen exchange bin, a liquid nitrogen flow pipe and an electric heating wire, it can play the role of cooling and heating, so that the memory alloy wire in the collet is under the action of temperature changes. A phase change occurs, so that the collet opens and closes; because the placing assembly is provided with a limiting ring, it can form friction with the collet, so that the collet is not easy to fall out; because the hollow section of the second sleeve of the pliers assembly The permanent magnet provided can attract each other with the magnetic material layer at the end of the tail pipe, so the collet that has fallen off after use can be temporarily fixed, and because the tail pipe passes through the heating wire, the heat generated by the heating wire can be transferred. To the tail pipe, and then to the memory alloy wire to make the collet open.

According to the memory alloy type separable hemostatic forceps device according to the present embodiment, since both the outer surface of the first sleeve and the outer surface of the second sleeve are coated with a heat-insulating coating, it is possible to prevent scalding and scalding caused by temperature changes. Frostbite patient's body tissue.

Therefore, the memory alloy type separable hemostatic forceps device of this embodiment has low cost, simple principle, convenient use, and can better stop bleeding. In addition, the memory alloy type separable hemostatic forceps device of this embodiment adopts a small size of the collet. , more precise and more flexible, it is easy to adjust the clamping angle and inclination angle of the collet in the abdominal cavity, so it can retain the operable space for minimally invasive surgery, so as not to interfere with the operation.

The above embodiments are preferred cases of the present invention, and are not intended to limit the protection scope of the present invention.

Claims (4)

1. a memory alloy type separable hemostatic forceps device, is characterized in that, comprises: a collet, comprising a rotating clamp head and a fixed clamp head connected by a memory alloy wire, and a tail pipe fixed with the connection part of the rotating clamp head and the fixed clamp head; A placement assembly for placing the collet at the place where hemostasis is required to perform hemostasis, comprising a first cannula with an end inserted into the tail pipe, passing through the interior of the first cannula and for pushing the collet The push rod, the liquid nitrogen exchange chamber arranged at the front end of the first sleeve, the liquid nitrogen circulation pipes arranged on the upper and lower sides of the inner wall of the first sleeve and connected with the liquid nitrogen exchange chamber, a restriction ring arranged at the end of the liquid nitrogen exchange bin for clamping the tail pipe, and a first heating wire wound around the liquid nitrogen flow pipe arranged between the restriction ring and the push rod; as well as The forceps assembly is used to remove the collet that has been dropped after use at the place where hemostasis is required, and includes a hollow section of the tail pipe at the front end for inserting the collet that has fallen off after use and a hollow section provided at the front end. a second sleeve formed by a solid section behind the hollow section and a second heating wire disposed at the position of the tail pipe and attached to the inner wall of the hollow section of the second sleeve, Wherein, one end of the push rod is provided with a push rod head contacting the tail pipe, and the other end is provided with a push-pull handle for pushing and pulling and applying thrust, The end of the tail pipe is coated with a layer of magnetic material, and the inner wall of the hollow section of the second sleeve is provided with a permanent magnet that attracts the layer of magnetic material. The phase transition temperature of the memory alloy wire is 70°C, so that the first heating wire undergoes a phase transition when the external power supply is turned on and heats up to 70°C, so that the chuck is opened, and then the liquid nitrogen flow pipe Spray liquid nitrogen to cool the memory alloy wires until the memory alloy wires are close together, the chuck is closed, and then the push rod is pushed to make the chuck fall off, The tail pipe of the collet that has fallen off after use enters the hollow section of the second sleeve and passes through the second heating wire, and then the magnetic material layer and the permanent magnet attract each other, thereby temporarily Fix the collet that has fallen off after use, and then connect an external power supply, so that the second heating wire generates heat and transmits it to the tail pipe, and then transmits it to the memory alloy wire to make the collet open. open, thereby removing the collet from the hemostasis, The collet is a one-time use collet. 2. memory alloy type separable hemostatic forceps device according to claim 1, is characterized in that: Wherein, the opening and closing angle of the chuck is 0°˜45°. 3. memory alloy type separable hemostatic forceps device according to claim 1, is characterized in that: Wherein, the outer surface of the first sleeve and the outer surface of the second sleeve are both coated with a thermal insulation coating. 4. memory alloy type separable hemostatic forceps device according to claim 1, is characterized in that: Wherein, the diameter of the confinement ring is smaller than the diameter of the tail pipe.

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