CN114948022A

CN114948022A - Surgical scissors

Info

Publication number: CN114948022A
Application number: CN202210624042.7A
Authority: CN
Inventors: 王晶; 郭立文; 高媛; 刘艳琼
Original assignee: Hunan Cancer Hospital
Current assignee: Hunan Cancer Hospital
Priority date: 2022-06-02
Filing date: 2022-06-02
Publication date: 2022-08-30

Abstract

The invention discloses a pair of surgical scissors, which comprises a shell, a handle, an elastic surface skin, a pipeline, a valve and a thread trimming mechanism, wherein the shell is provided with a handle; the outer shell is provided with a wire groove for accommodating an operation wire, a partition board is arranged in the outer shell, the partition board divides an inflation cavity in the outer shell, the inflation cavity is provided with a flat surface which faces to the outside and is covered by an elastic skin, one end of a pipeline is communicated with the inflation cavity, the other end of the pipeline is used for connecting an air source, a valve is arranged on the pipeline, and when the air source inflates the inflation cavity, the elastic skin expands outwards; the thread cutting mechanism is arranged in the shell and used for cutting the operation thread in the thread groove; the handle is connected with the shell; the surgical scissors provided by the invention utilize the inflatable cavity and the elastic epidermis to control the distance between the thread cutting mechanism and the suture tissue of a patient, so that a doctor can accurately control the length of the reserved thread end of the surgical thread, and the phenomena that the suture falls off due to the excessively short reserved thread end and foreign body reaction is caused by the excessively long reserved thread end are avoided.

Description

Surgical scissors

Technical Field

The invention relates to the field of medical treatment, in particular to a pair of surgical scissors.

Background

Surgical operations often involve suturing body tissue, after which the surgeon cuts the surgical thread using surgical scissors. Generally, the surgical thread cannot be cut off flush, but a certain length of thread end needs to be reserved. The specific length of the reserved thread head is related to the type of operation and the type of operation thread, for example, the thread type operation thread is generally reserved for 1-2 mm, and a part of a larger part is reserved for 3-4 mm; gut sutures are typically retained 3-4 mm, stainless steel wire type surgical sutures are typically retained 5-6 mm, and skin sutures are typically retained 10 mm. At present, no scissors specially used for cutting off the surgical thread exist, a surgeon generally uses common medical scissors to control the length of the reserved thread end by means of own technology and experience, the method has large errors, and medical conditions that the suture falls off due to too short reserved thread end and foreign body reaction is caused due to too long reserved thread end easily occur.

Disclosure of Invention

The invention aims to provide a special surgical scissors which helps a doctor to more accurately control and keep the length of a thread end.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a pair of surgical scissors comprises a shell, a handle, an elastic skin, a pipeline, a valve and a thread cutting mechanism;

the surgical operation line comprises a shell, a valve, an elastic skin and a pipeline, wherein the shell is provided with a wire slot for accommodating an operation line, a partition plate is arranged in the shell, the partition plate divides an inflation cavity in the shell, the inflation cavity is provided with a flat surface which faces to the outside and is covered by the elastic skin, one end of the pipeline is communicated with the inflation cavity, the other end of the pipeline is used for connecting the air source, the valve is arranged on the pipeline, and when the air source inflates the inflation cavity, the elastic skin expands outwards;

the thread cutting mechanism is arranged in the shell and is used for cutting the operation thread in the thread groove;

the handle is connected with the shell.

The surgical scissors are specially used for cutting off the surgical thread, after the suture is finished, a doctor inserts the redundant surgical thread into the thread groove, the inflatable cavity is attached to the sutured tissue, and then the surgical thread is cut off by using the thread cutting mechanism; obviously, the degree of protrusion of the elastic surface on the inflation cavity is directly correlated to the length of the final retained thread, and the physician can precisely control the length of the retained thread by precisely controlling the inflation amount in the inflation cavity.

In order to facilitate use, the tail part of the handle is provided with a gas tank, and a pipeline is connected with the gas tank.

Furthermore, the surgical scissors further comprise a pressure sensor and a controller, the valve is an electromagnetic valve, the pressure sensor measures the air pressure in the air inflation cavity and transmits the measurement result to the controller, and the controller closes the electromagnetic valve after the air pressure in the air inflation cavity reaches a set value; the doctor sets the length of the reserved thread end before trimming according to specific requirements, the controller automatically converts the length of the reserved thread end into an air pressure value of the inflation cavity, and then the controller opens the electromagnetic valve to inflate the inflation cavity until the air pressure is reached.

The thread cutting mechanism is used for cutting the surgical thread in the thread groove and comprises a blade capable of translating or rotating; the invention provides a specific thread trimming mechanism which comprises the following components: the wire cutting mechanism comprises a first arc-shaped blade and a first cutter bar, one end of the first cutter bar is connected with the first arc-shaped blade, and the other end of the first cutter bar is hinged to one side of the wire groove; after the first knife rod rotates, the first arc-shaped knife blade is inserted into one end of the wire groove close to the air inflation cavity.

If the first arc-shaped blade is manually operated, a rotating shaft needs to be configured for the first cutter rod, and a user operates the rotating shaft to control the first cutter rod to rotate; because the gas tank is arranged in the invention, the invention realizes the automatic rotation of the first cutter bar by utilizing the gas tank, and the specific method is as follows: the wire cutting mechanism further comprises a first air bag, the first air bag is fixed on the wire groove, the first air bag and the first cutter rod are located on the same side of the wire groove, and the first air bag is connected with an air tank; when the first air bag is inflated and expanded, the first air bag drives the first knife rod to rotate.

The invention adopts the inflatable cavity and the elastic skin to accurately control the length of the reserved thread end, however, in some cases, the length of the reserved thread end is 1-2 mm, but the thickness of the inflatable cavity is difficult to be less than 2 mm; in order to overcome the problem, the thread trimming mechanism further comprises a second arc-shaped blade, a second cutter bar and a second air bag; one end of the second cutter bar is connected with the second arc-shaped blade, and the other end of the second cutter bar is hinged to the other side of the wire groove; after the second cutter bar rotates, the second arc-shaped blade is inserted into one end of the wire casing, which is far away from the inflation cavity; the second air bag is fixed on the wire casing, the second air bag and the second cutter bar are positioned on the same side of the wire casing, and the second air bag is connected with the air tank; when the second air bag is inflated and expanded, the second air bag drives the second cutter bar to rotate;

this means that if the surgeon desires to retain a length of thread end of 1-2 mm, the surgeon should rotate the surgical shears of the present invention so that the end of the thread groove remote from the inflated cavity is adjacent to the sutured tissue and then cut the surgical thread with the second curved blade.

The first cutter bar and the second cutter bar are driven to rotate by corresponding air bags, and are convenient to reset, torsion springs for resetting are arranged at hinged positions of the first cutter bar and the second cutter bar, and when air in the first air bag and the second air bag is released, the first cutter bar and the second cutter bar are reset under the action of the torsion springs.

In the invention, the first arc-shaped blade and the second arc-shaped blade are both positioned outside the wire slot, and when an operation wire is cut off, the first arc-shaped blade and the second arc-shaped blade need to enter the wire slot; therefore, the slot is provided with a notch for the first arc-shaped blade and the second arc-shaped blade to pass in and out; in order to avoid liquid such as blood generated in an operation from entering the shell from the gap, a first rubber layer and a second rubber layer are respectively arranged on two sides of the first arc-shaped blade and the second arc-shaped blade, and the first rubber layer and the second rubber layer can realize sealing between the blades and the gap.

When the surgical thread is cut, the surgical thread left at the suture of the patient is called an indwelling thread, and the excess surgical thread cut and taken away by the doctor is called a disposing thread; the first rubber layer is positioned on one side of the first arc-shaped blade and one side of the second arc-shaped blade, which are close to the abandoning line, and the first rubber layer slightly exceeds the cutting edge; when the first arc-shaped blade is used for cutting off an operation line, the cutting edge needs to be in contact with the inner wall of the line groove, the first rubber layer is designed to exceed the cutting edge, and when the cutting edge is in contact with the inner wall of the line groove, the first rubber layer is slightly compressed, so that the line head of the abandoned line is tightly pressed on the inner wall of the line groove by the first rubber layer, and when a doctor takes away the surgical scissors, the abandoned line can be taken away; the design of the first rubber layer enables the surgical scissors to have the function of accommodating the abandoned line.

Further, the shell is spherical, and the handle is cylindrical; the bottom of the shell is provided with a threaded tubular interface, and the end head of the handle is connected in the tubular interface.

Has the advantages that: (1) the surgical scissors provided by the invention utilize the inflatable cavity and the elastic epidermis to control the distance between the thread cutting mechanism and the suture tissue of a patient, so that a doctor can accurately control the length of the reserved thread end of the surgical thread, and the phenomena that the suture falls off due to the excessively short reserved thread end and foreign body reaction is caused by the excessively long reserved thread end are avoided. The surgical scissors disclosed by the invention can be used for accurately controlling the air pressure in the air inflation cavity by utilizing the pressure sensor and the controller, so that the rising height of the elastic epidermis is not required to be manually operated and controlled by a doctor, and the use is more convenient. (3) The surgical scissors are provided with the two arc-shaped blades to cut the surgical thread from two directions, so that the length of the thread head can be controlled within 2 mm under the condition that the surgical scissors are provided with the inflatable cavity. And (4) the first rubber layer is arranged on the two arc-shaped blades and exceeds the blade edge, so that the arc-shaped blades can fix the abandoned line after the operation line is cut off, and the abandoned line is ensured to leave a patient along with the operation scissors.

Drawings

Fig. 1 is a front view of surgical scissors according to embodiment 1.

Fig. 2 is a left side view of the surgical scissors of embodiment 1.

Fig. 3 is a sectional view taken along line a-a of fig. 2.

Fig. 4 is a sectional view taken along line B-B of fig. 2.

FIG. 5 is (a) an operational state diagram of surgical scissors according to embodiment 1.

Fig. 6 is a view showing the operation state of the surgical shears according to embodiment 1 (second embodiment).

Fig. 7 is an enlarged view a of fig. 6.

Fig. 8 is a view (third) showing an operating state of the surgical shears according to embodiment 1.

Wherein: 100. a housing; 110. a wire slot; 120. a partition plate; 130. an inflatable cavity; 200. a handle; 300. An elastic skin; 400. a pipeline; 500. a thread trimming mechanism; 510. a first arcuate blade; 520. a first cutter bar; 530. a first air bag; 540. a second arc-shaped blade; 550. a second cutter bar; 560. a second air bag; 570. a first rubber layer; 580. a second rubber layer; 600. a gas tank; 700. and (4) an operation line.

Detailed Description

The present invention will be described in further detail with reference to specific embodiments.

Example 1

As shown in fig. 1 to 4, the surgical scissors of the present embodiment includes a housing 100, a handle 200, an elastic skin 300, a pipe 400, a valve, a thread cutting mechanism 500, a gas tank 600, a pressure sensor, and a controller;

as shown in fig. 2 and 3, the housing 100 is spherical and has flat surfaces at both ends, and the handle 200 is cylindrical; the bottom of the housing 100 is provided with a threaded tubular interface, and the end of the handle 200 is connected in the tubular interface; the housing 100 is provided with a wire groove 110 for accommodating the operation wire 700, a baffle 120 is arranged inside the housing 100, the baffle 120 divides an inflation cavity 130 in the housing 100, the inflation cavity 130 has a flat surface facing to the outside and covered by the elastic skin 300, one end of a pipeline 400 is communicated with the inflation cavity 130, the other end of the pipeline 400 passes through the handle 200 and is connected with the air tank 600, a valve is arranged on the pipeline 400, and when an air source inflates the inflation cavity 130, the elastic skin 300 expands outwards; the valve is an electromagnetic valve, the pressure sensor measures the air pressure in the inflation cavity 130 and transmits the measurement result to the controller, and the controller closes the electromagnetic valve after the air pressure in the inflation cavity 130 reaches a set value;

as shown in fig. 4, the thread trimming mechanism 500 includes a first arc-shaped blade 510, a first knife bar 520, a first air bag 530, a second arc-shaped blade 540, a second knife bar 550 and a second air bag 560, wherein one end of the first knife bar 520 is connected with the first arc-shaped blade 510, and the other end is hinged to one side of the thread groove 110; the first air bag 530 is fixed on the wire casing 110, the first air bag 530 and the first knife rod 520 are positioned on the same side of the wire casing 110, and the first air bag 530 is connected with the air tank 600; when the first air bag 530 is inflated, the first air bag 530 drives the first blade bar 520 and the first arc-shaped blade 510 to rotate, and the first arc-shaped blade 510 is inserted into one end of the wire casing 110 close to the inflation cavity 130;

one end of the second knife bar 550 is connected with the second arc-shaped blade 540, and the other end is hinged to the other side of the wire casing 110; after the second knife bar 550 is rotated, the second arc-shaped blade 540 is inserted into one end of the wire casing 110 far away from the inflation cavity 130; the second air bag 560 is fixed on the linear groove 110, the second air bag 560 and the second cutter bar 550 are positioned on the same side of the linear groove 110, and the second air bag 560 is connected with the air tank 600; when the second air bag 560 inflates, the second air bag 560 drives the second knife bar 550 to rotate; the first knife bar 520 and the second knife bar 550 are both provided with a torsion spring for return at the hinge.

The surgical scissors of the embodiment are mainly used for cutting the surgical thread 700 after suturing, and the specific use method is as follows:

(1) after the surgical suture is completed, as shown in fig. 5, the surgical thread 700 is introduced into the thread groove 110, and the inflatable cavity 130 is adjacent to the sutured tissue of the patient, i.e., adjacent to the knot of the surgical thread 700 as shown in fig. 5;

(2) the doctor sets the length of the reserved thread end through the knob, and the controller controls the air tank 600 to inflate the inflation cavity 130 according to the set length of the reserved thread end, so that the elastic skin 300 bulges outwards;

(3) the surgeon presses the switch to inflate the first balloon 530. As shown in FIG. 6, the first balloon 530 rotates the first blade 520 and the first curved blade 510, and the first curved blade 510 is inserted into the end of the linear slot 110 near the inflation lumen 130 and shears the surgical thread 700.

Obviously, the length of the remaining thread end of the cut surgical thread 700 is directly related to the height of the elastic skin 300, and the doctor can control the height of the elastic skin 300 by controlling the air pressure in the air inflation cavity 130 through the controller, thereby realizing the precise control of the length of the remaining thread end of the surgical thread 700.

As can be seen from fig. 6, the inflation cavity 130 itself has a certain thickness, and it is difficult to achieve a length of the remaining thread end of the surgical thread 700 below 2 mm in the presence of the inflation cavity 130; therefore, in the face of certain procedures requiring a final retained thread end length of 1-2 mm, the surgeon should rotate the entire surgical scissors, as shown in FIG. 8 in particular, so that the end of the thread groove 110 remote from the inflation cavity 130 is adjacent to the sutured tissue, and then press the switch to inflate the second balloon 560, and the second balloon 560 drives the second knife bar 550 and the second curved blade 540 to rotate and cut the surgical thread 700.

As shown in fig. 7, the first arc-shaped blade 510 is located outside the linear groove 110, and when the surgical thread 700 is cut, the first arc-shaped blade 510 needs to enter the linear groove 110; therefore, the slot 110 is provided with a notch for the first arc-shaped blade 510 to enter and exit; in order to prevent liquid such as blood generated in an operation from entering the inside of the housing 100 through the gap, the first rubber layer 570 and the second rubber layer 580 are respectively disposed on two sides of the first arc-shaped blade 510, and the first rubber layer 570 and the second rubber layer 580 can seal the gap with the first arc-shaped blade 510; for the same reason, the first rubber layer 570 and the second rubber layer 580 are also arranged on the two sides of the second arc-shaped blade 540;

after the surgical thread 700 is cut, the surgical thread 700 left at the suture of the patient is called an indwelling thread, the excess surgical thread 700 cut and removed by the surgeon is called an abandoning thread, the upper half of the surgical thread 700 in fig. 7 is the abandoning thread, and the lower half is the indwelling thread; continuing to see fig. 7, the first rubber layer 570 in this embodiment is located on the side of the first arcuate blade 510 near the disposal line, with the first rubber layer 570 extending slightly beyond the cutting edge; when the first arc-shaped blade 510 is used for cutting the surgical thread 700, the blade needs to be in contact with the inner wall of the thread groove 110, the first rubber layer 570 is designed to exceed the blade, which causes the blade to be in contact with the inner wall of the thread groove 110, the first rubber layer 570 is slightly compressed, so that the thread end of the abandoned thread is tightly pressed on the inner wall of the thread groove 110 by the first rubber layer 570, and when a doctor takes the surgical scissors of the embodiment away, the abandoned thread is taken away; the design of the first rubber layer 570 provides the surgical scissors of the present embodiment with the function of accommodating the disposal wire.

Although the embodiments of the present invention have been described in the specification, these embodiments are merely provided as a hint, and should not limit the scope of the present invention. Various omissions, substitutions, and changes may be made without departing from the spirit of the invention and are intended to be within the scope of the invention.

Claims

1. A surgical shears, characterized by: comprises a shell (100), a handle (200), an elastic skin (300), a pipeline (400), a valve and a thread trimming mechanism (500);

the surgical suture line comprises a shell (100), a line slot (110) for accommodating a surgical suture line is formed in the shell (100), a partition plate (120) is arranged in the shell (100), the partition plate (120) partitions an inflation cavity (130) in the shell (100), the inflation cavity (130) is provided with a flat surface which faces the outside and is covered by an elastic skin (300), one end of a pipeline (400) is communicated with the inflation cavity (130), the other end of the pipeline (400) is used for being connected with a gas source, and a valve is arranged on the pipeline (400);

the thread cutting mechanism (500) is arranged in the shell (100), and the thread cutting mechanism (500) is used for cutting an operation thread in the thread groove (110);

the handle (200) is connected with the shell (100).

2. Surgical scissors according to claim 1, characterized in that: the tail part of the handle (200) is provided with a gas tank (600), and the pipeline (400) is connected with the gas tank (600).

3. A surgical shears according to claim 2, wherein: the pneumatic control device is characterized by further comprising a pressure sensor and a controller, wherein the valve is an electromagnetic valve, the pressure sensor measures the air pressure in the inflatable cavity (130) and transmits the measurement result to the controller, and the controller closes the electromagnetic valve after the air pressure in the inflatable cavity (130) reaches a set value.

4. A surgical shears according to claim 3, wherein: the wire cutting mechanism (500) comprises a first arc-shaped blade (510) and a first cutter bar (520), one end of the first cutter bar (520) is connected with the first arc-shaped blade (510), and the other end of the first cutter bar is hinged to one side of the wire groove (110); after the first cutter bar (520) rotates, the first arc-shaped blade (510) is inserted into one end of the wire casing (110) close to the inflation cavity (130).

5. A surgical shears according to claim 4, wherein: the trimming mechanism (500) further comprises a first air bag (530), the first air bag (530) is fixed on the wire groove (110), the first air bag (530) and the first cutter bar (520) are located on the same side of the wire groove (110), and the first air bag (530) is connected with the air tank (600); when the first air bag (530) is inflated, the first air bag (530) drives the first cutter bar (520) to rotate.

6. A surgical shears according to claim 5, wherein: the thread cutting mechanism (500) further comprises a second arc-shaped blade (540), a second cutter bar (550) and a second air bag (560); one end of the second knife bar (550) is connected with the second arc-shaped blade (540), and the other end is hinged to the other side of the wire casing (110); after the second cutter bar (550) rotates, the second arc-shaped blade (540) is inserted into one end of the wire casing (110) far away from the inflation cavity (130); the second air bag (560) is fixed on the wire groove (110), the second air bag (560) and the second cutter bar (550) are positioned on the same side of the wire groove (110), and the second air bag (560) is connected with the air tank (600); when the second air bag (560) is inflated, the second air bag (560) drives the second cutter bar (550) to rotate.

7. A surgical shears according to claim 6, wherein: and torsional springs for resetting are arranged at the hinged positions of the first cutter bar (520) and the second cutter bar (550).

8. Surgical scissors according to claim 7, characterized in that: two sides of the first arc-shaped blade (510) and the second arc-shaped blade (540) are respectively provided with a first rubber layer (570) and a second rubber layer (580).

9. A surgical shears according to claim 8, wherein: the first rubber layer (570) is positioned on one side of the first arc-shaped blade (510) and the second arc-shaped blade (540) close to the disposal line, and the first rubber layer (570) exceeds the blade edge.

10. Surgical scissors according to claim 1, characterized in that: the shell (100) is spherical, and the handle (200) is cylindrical; the bottom of the shell (100) is provided with a threaded tubular interface, and the end head of the handle (200) is connected in the tubular interface.