CN216394132U

CN216394132U - Valve protection device used in laparoscopic valve replacement surgery

Info

Publication number: CN216394132U
Application number: CN202120051620.3U
Authority: CN
Inventors: 张晓慎; 代忠伟; 荀飞
Original assignee: Beijing Puhui Biomedical Engineering Co ltd
Current assignee: Beijing Puhui Biomedical Engineering Co ltd
Priority date: 2021-01-08
Filing date: 2021-01-08
Publication date: 2022-04-29
Anticipated expiration: 2031-01-08

Abstract

The application relates to a valve protection device used in an endoscopic valve replacement operation, which belongs to the field of medical equipment and comprises a protective sleeve, wherein threading notches at two axial ends of the protective sleeve are formed in the side wall of the protective sleeve. This application can protect the mitral valve when the mitral valve product passes through the intercostal clearance to reduce the condition that the extrusion warp appears when the mitral valve passes the intercostal clearance.

Description

Valve protection device used in laparoscopic valve replacement surgery

Technical Field

The application relates to the technical field of medical equipment, in particular to a valve protection device used in an endoscopic valve replacement operation.

Background

Valvular heart disease is a common heart disease, with valve damage due to rheumatic heat being the most common. Each individual has four valves in the heart. Namely, the aortic valve, which joins the left ventricle and the aorta, the pulmonary valve, which joins the right ventricle and the pulmonary artery, the mitral valve, which joins the left atrium and the left ventricle, and the tricuspid valve, which joins the right atrium and the right ventricle. They all act as one-way valves, allowing blood to flow only from one direction to the other, but not back.

The heart valvular disease refers to the single valve or multi-valve pathological changes of the valves of the mitral valve, the tricuspid valve, the aortic valve and the pulmonary valve, which affect the normal flow of blood flow due to the pathological changes of rheumatic fever, mucus deformation, degenerative change, congenital malformation, ischemic necrosis, infection or trauma and the like, and finally lead to heart failure.

Mitral valve lesions are classified as mitral stenosis and incompetence. The mitral valve is very harmful, if the mitral valve is diseased, resulting in stenosis and insufficiency, blood reflux is easily caused, resulting in chest distress, purple lips, unsmooth respiration and other symptoms, and if the mitral valve is not timely treated, even heart failure may be caused, thus seriously harming body health.

In cases where the diseased valve of the heart cannot be corrected by a medically conservative approach after the diseased valve, the diseased valve needs to be replaced by a well-functioning valve, for example: mitral valve replacement, aortic valve replacement, or bivalve replacement, wherein the number of lesions of the mitral valve is increased in the valve surgery. Mitral valve replacement is a commonly encountered and major surgical approach.

In order to ensure sufficient visual field exposure in the conventional median thoracotomy mitral valve replacement operation, the sternum of a patient needs to be cut or the muscular layer of the chest wall needs to be cut, a 20-30 mm-sized incision is formed, the damaged valve is cut under direct view in the heart, and then the artificial mitral valve is implanted. Therefore, while we are performing valve replacement, we also have a series of problems, such as: the operation wound is large, the patient has more bleeding, the body surface operation scar is obvious, the sternal development deformity and the like, although the life of the patient is saved, the physiological and psychological aspects of the patient are greatly influenced, so that the patient returns to the society slowly, and the long-term life quality is poor.

The appearance of the TV thoracoscope changes the exposure of the operation visual field, the visual field is amplified with the scope, the operation is carried out under the assistance of the thoracoscope and the guidance of the TV screen, compared with the traditional operation, the wound is small, the bleeding is less, the pain of the mature hand is light, the recovery is fast, the operation cost is less, and the TV thoracoscope has obvious technical advantages.

In the aspect of thoracoscope application, mitral valve replacement surgery under the assistance of thoracoscope still belongs to the category of direct-view surgery. In the operation process, a hard retractor is required to expose the visual field, so that the damage to bones and muscles is serious, the operation pain is obvious, and much bleeding is caused. The mitral valve replacement operation under the complete thoracoscope is a hole-type operation, does not need a hard retractor, and the tissue injury is please, compared with the traditional thoracotomy operation and thoracoscope assisted operation, the mitral valve replacement operation has the obvious technical advantages that the skin incision is small, the muscle does not need to be transected when the mitral valve replacement operation enters the thoracic cavity, the hard retractor traction is not needed, the skeletal muscle damage is avoided to the maximum extent, the postoperative pain is light, the bleeding is less, and the recovery is fast.

Therefore, the minimally invasive mitral valve surgery is a new technology with great prospect and market in the field of cardiac surgery, the attention of cardiac surgeons and patients with heart diseases to the technology is increasing day by day, and at present, rubber in some hospitals in China develops the replacement operation of the small-incision mitral valve, thereby achieving certain performance.

The chest bone is opened before traditional extracardiac direct-view operation, and prosthetic valve can directly enter into the thorax and place in waiting to replace the position, and among the laparoscopic minimal access surgery, various apparatus, for example endoscope, biopsy forceps etc. all are the wicresoft special use, get into the thorax through little incision, and the biovalve of artificial product need enter into the thorax with the help of the intercostal clearance incision, and the intercostal clearance space is limited, and prosthetic valve is receiving the extrusion easily through the intercostal clearance. The artificial biological valve is generally composed of an alloy/plastic stent and biological tissues, and the extrusion easily causes the stent to be damaged so as to lose functions.

SUMMERY OF THE UTILITY MODEL

To the deficiency that prior art exists, the purpose of this application is to provide a valve protection device that uses in laparoscopic valve replacement operation, and it can protect the mitral valve when the mitral valve product passes through the intercostal clearance to reduce the circumstances that the extrusion warp appears when passing the intercostal clearance in the mitral valve.

The above utility model of this application aim at can realize through following technical scheme:

the utility model provides a valve protection device that uses in laparoscopic valve replacement operation, includes the protective sheath, set up the threading notch at intercommunication protective sheath axial both ends on the lateral wall of protective sheath.

By adopting the technical scheme, when the artificial heart valve is delivered to the chest cavity through the intercostal space, the artificial heart valve is arranged in the protective sleeve, then the artificial heart valve and the protective sleeve pass through the intercostal space together to be delivered into the chest cavity, and in the delivery process, the protective sleeve separates the rib from the artificial heart valve, so that the probability that the artificial heart valve is extruded and deformed when passing through the intercostal space is reduced.

The present application may be further configured in a preferred example to: the outside surface of protective sheath is provided with the grip block.

Through adopting above-mentioned technical scheme, when operating the protective sheath, can be through tweezers centre gripping grip block to be convenient for medical staff carries out the centre gripping operation to the protective sheath.

The present application may be further configured in a preferred example to: the clamping block comprises a cylinder with an axis parallel to the axis of the protective sleeve and a connecting piece located between the cylinder and the protective sleeve, and the thickness of the connecting piece is smaller than the diameter of the cylinder.

Through adopting above-mentioned technical scheme, when tweezers were in centre gripping grip block, because the setting of cylinder to when tweezers were carried the grip block, tweezers were difficult and break away from between the grip block.

The present application may be further configured in a preferred example to: the insertion end of the protective sleeve is provided with a containing cavity for containing a forming ring of the artificial heart valve.

Through adopting above-mentioned technical scheme, can hide the shaping ring position of prosthetic heart valve in holding the chamber to avoid when prosthetic heart valve sends into the thorax inside, thereby the shaping ring of prosthetic heart valve touches the skew of rib in one's place.

The present application may be further configured in a preferred example to: the outside of protective sheath is provided with the handle.

Through adopting above-mentioned technical scheme, thereby can change in operating the protective sheath through setting up the handle.

The present application may be further configured in a preferred example to: the handle is provided with an easily-bent section capable of being stressed and bent.

Through adopting above-mentioned technical scheme, thereby can be according to the needs of reality to the handle is crooked to medical staff sends the protective sheath to appointed position department.

The present application may be further configured in a preferred example to: the handle is detachably connected with the protective sleeve.

Through adopting above-mentioned technical scheme, can make the protective sheath of a handle collocation multiple specification to reduce cost.

The present application may be further configured in a preferred example to: the number of the handles is two and the handles are arranged along the circumferential direction of the protective sleeve.

Through adopting above-mentioned technical scheme, when the handle takes place the bending, take place to rotate easily when handing the handle, arrange through two handles to be convenient for medical staff adjusts the position of protective sheath.

The present application may be further configured in a preferred example to: the handle is provided with an anti-skid structure.

Through adopting above-mentioned technical scheme, increase the roughness on handle surface to the condition that the hand is smooth is difficult for appearing when medical staff holds the handle.

The present application may be further configured in a preferred example to: the protective sleeve is conical.

Through adopting above-mentioned technical scheme, be convenient for make the protective sheath pass between the rib clearance to reduce the degree of difficulty that the protective sheath passed the rib clearance.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the artificial heart valve is arranged in the protective sleeve, then the protective sleeve and the artificial heart valve pass through the intercostal space and are sent to the chest cavity, and the artificial heart valve is protected by the protective sleeve, so that the condition that the artificial heart valve is extruded and deformed when passing through the intercostal space is reduced;

2. the handle is arranged and the easily-bent section is arranged on the handle, so that the handle can be bent according to actual conditions, and the protective sleeve can be sent to a specified position;

3. through setting up the handle into two, when operating the protective sheath, the medical staff of being convenient for adjusts the position of protective sheath.

Drawings

Fig. 1 is a schematic structural view of a valve protection device in example 1;

FIG. 2 is a schematic structural view of the valve protection device of example 2;

FIG. 3 is a schematic structural view of the valve protection device of example 3;

FIG. 4 is an exploded view of the joint of the handle and the protective sheath in example 3;

fig. 5 is a schematic structural view of the valve protection device of example 4.

In the figure, 1, a protective sleeve; 11. a threading slot; 12. an outer flange; 13. side blocking; 14. a retainer ring; 15. a threaded hole; 2. a clamping block; 21. a cylinder; 22. connecting sheets; 3. a handle; 31. a hand-held portion; 311. knurling; 32. a connecting portion; 321. a threaded connector; 33. a flexible section.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

Example 1:

referring to fig. 1, for the valve protection device that uses in laparoscopic valve replacement surgery that this application disclosed, including being cylindric protective sheath 1, protective sheath 1 adopts polyoxymethylene, polysulfone, or PEEK material to process and forms. Threading notch 11 is arranged on the side wall of the protective sleeve 1, and the threading notch 11 is respectively communicated with the end faces of two ends of the protective sleeve 1 in the axial direction.

An outer flange 12 which extends outwards and is integrally formed with the protective sleeve 1 is arranged at one end of the protective sleeve 1. The end of the protective sleeve 1 with the outer flange 12 is an insertion end of the protective sleeve 1. When the artificial heart valve is placed in the protective sleeve 1, the valve part of the artificial heart valve is inserted into the protective sleeve 1 from the end of the protective sleeve 1 with the outer flange 12, and the forming ring of the artificial heart valve is carried on the outer flange 12.

And a side block 13 extending in the direction departing from the protective sleeve 1 is arranged at the edge of the outer flange 12, and the side block 13 and the outer flange 12 are integrally formed. The space enclosed by the side barriers 13 forms a receiving cavity for receiving a shaped ring of the prosthetic heart valve.

When the artificial heart valve is placed inside the protective sleeve 1, the forming ring of the artificial heart valve is located in the accommodating cavity, and the situation that the artificial heart valve touches the rib so as to cause deflection is reduced when the protective sleeve 1 and the artificial heart valve are sent into the chest cavity together.

Example 2:

referring to fig. 2, in order to provide a valve protection device for use in laparoscopic valve replacement surgery as disclosed in the present application, example 2 differs from example 1 in that: the clamping block 2 extending outwards is arranged on the outer side surface of the protective sleeve 1, and the position of the clamping block 2 is opposite to the position of the threading notch 11 on the protective sleeve 1 by the axis of the protective sleeve 1. The clamping block 2 is integrally formed with the protective sleeve 1.

The clamping block 2 comprises a cylinder 21 with an axis parallel to the axis of the protective sleeve 1 and a connecting piece 22 between the cylinder 21 and the protective sleeve 1, wherein the thickness of the connecting piece 22 is smaller than the diameter of the cylinder 21.

When sending into protective sheath 1 in the thorax, can centre gripping post grip block 2 through centre gripping instruments such as tweezers to the medical staff of being more convenient for sends into protective sheath 1 in the thorax. And the diameter of the cylinder 21 is larger than the thickness of the connecting piece 22, so that when the tweezers are used for clamping the clamping block 2, the tweezers are not easy to separate from the clamping block 2.

Example 3:

referring to fig. 3, in order to provide a valve protection device for use in laparoscopic valve replacement surgery as disclosed in the present application, example 3 differs from example 1 in that: the whole protective sleeve 1 is a conical tube made of biomedical metal. The medical metal can be stainless steel, titanium alloy and cobalt-based alloy. The end of the protective sleeve 1 with larger outer diameter is the inserting end of the protective sleeve 1. A retainer ring 14 which is integrally formed with the protective sleeve 1 is arranged at the insertion end of the protective sleeve 1, and the inner hole diameter of the retainer ring 14 is larger than that of the insertion end of the protective sleeve 1, so that a containing cavity for containing a forming ring of the artificial heart valve is formed at the joint of the retainer ring 14 and the insertion end of the protective sleeve 1.

The threading slot 11 communicates with the end surface of the collar 14 facing away from the protective sleeve 1 and the end surface of the protective sleeve 1 with a smaller diameter, respectively.

Referring to fig. 3 and 4, a threaded hole 15 is formed in the outer surface of the protective case 1, and the threaded hole 15 is located opposite to the threading notch 11 with respect to the axis of the protective case 1. A handle 3 is screwed in the threaded hole 15. The axis of the handle 3 is perpendicular to the axis of the protective sleeve 1.

The handle 3 comprises a handheld portion 31, a connecting portion 32 and a flexible section 33 which is located between the handheld portion 31 and the connecting portion 32 and can be bent under stress, wherein the handheld portion 31, the connecting portion 32 and the flexible section 33 are integrally formed. One end of the connecting portion 32, which is far away from the flexible section 33, is provided with a threaded connector 321 with external threads matched with the threaded hole 15 in a threaded manner, and the threaded connector 321 and the connecting portion 32 are integrally formed.

The surface of the handheld part 31 is pressed with the knurl 311, so that the surface roughness of the handheld part 31 is increased, and when a medical worker holds the handheld part 31, the medical worker can tightly hold the handheld part 31, so that the situation of slippery hands is not easy to occur.

When need send into protective sheath 1 inside the thorax, with handle 3 and protective sheath 1 installation together to the medical staff of being more convenient for operates protective sheath 1, simultaneously because be provided with easy bending section 33 on the handle 3, thereby can be crooked handle 3, thereby be convenient for send protective sheath 1 to required position department.

Example 4:

referring to fig. 5, in order to provide a valve protection device for use in laparoscopic valve replacement surgery as disclosed in the present application, example 4 differs from example 3 in that: the number of the handles 3 is two. The handles 3 are arranged in a row along the circumferential direction of the protective sheath 1.

By setting the handle 3 to two, when bending the handle 3, when operating the protective sheath 1, the handle 3 sinks easily due to the weight of the protective sheath 1, so that the medical staff can rotate the handheld part 31 easily in the hand when holding the handheld part 31 in the hand, thereby not easily sending the protective sheath 1 to the exact position when sending the protective sheath 1 into the chest. Through the second handle 3, the position of the protective sleeve 1 can be adjusted, so that medical staff can accurately convey the protective sleeve 1 to an accurate position.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a valve protection device that uses in laparoscopic valve replacement operation which characterized in that: including protective sheath (1), set up threading notch (11) that intercommunication protective sheath (1) axial both ends on the lateral wall of protective sheath (1), the outside surface that states protective sheath (1) is provided with grip block (2) or the outside of protective sheath (1) is provided with handle (3), be provided with easily bending section (33) that can the atress is crooked on handle (3).

2. The valve protection device for use in laparoscopic valve replacement surgery of claim 1, wherein: the clamping block (2) comprises a cylinder (21) with an axis parallel to that of the protective sleeve (1) and a connecting piece (22) located between the cylinder (21) and the protective sleeve (1), and the thickness of the connecting piece (22) is smaller than the diameter of the cylinder (21).

3. The valve protection device for use in laparoscopic valve replacement surgery of claim 1, wherein: the insertion end of the protective sleeve (1) is provided with a containing cavity for containing a forming ring of the artificial heart valve.

4. The valve protection device for use in laparoscopic valve replacement surgery of claim 1, wherein: the handle (3) is detachably connected with the protective sleeve (1).

5. The valve protection device for use in laparoscopic valve replacement surgery of claim 1, wherein: the number of the handles (3) is two and the handles are arranged along the circumferential direction of the protective sleeve (1).

6. The valve protection device for use in laparoscopic valve replacement surgery of claim 1, wherein: and an anti-skid structure is arranged on the handle (3).

7. The valve protection device for use in laparoscopic valve replacement surgery of claim 1, wherein: the protective sleeve (1) is conical.