CN111603132A

CN111603132A - Hysteroscope

Info

Publication number: CN111603132A
Application number: CN202010466285.3A
Authority: CN
Inventors: 李斌; 张梦溪
Original assignee: Suzhou Acuvu Medical Technology Co ltd
Current assignee: Suzhou Acuvu Medical Technology Co ltd
Priority date: 2020-05-28
Filing date: 2020-05-28
Publication date: 2020-09-01

Abstract

The invention provides a hysteroscope, which comprises a handheld part and an intubation assembly connected with the handheld part, wherein the handheld part is provided with an inner cavity, the front and back opposite surfaces of the inner cavity are provided with through holes for instruments to pass through, the through hole positioned in the front is taken as an instrument outlet of the intubation assembly, the through hole positioned in the back is taken as an instrument insertion hole, a first sealing element for sealing the instrument outlet and a second sealing element for sealing the instrument inlet are arranged in the inner cavity, and the first sealing element and the second sealing element are both one-way valve elements and are provided with sealing ports for the instruments to pass through; the inner cavity is also provided with a dividing piece which divides the inner cavity into a front cavity and a rear cavity, and the dividing piece is provided with a through hole for instruments to pass through. The hysteroscope of the invention prevents water in uterus from leaking from the instrument inlet of the hand-held part, and is convenient for operators to use.

Description

Hysteroscope

Technical Field

The invention relates to a hysteroscope, in particular to a hysteroscope capable of preventing water leakage.

Background

Hysteroscopes are used for examination and treatment in the uterine cavity. When the hysteroscope is used, the lens of the hysteroscope can magnify and observe the part in the uterine cavity. The surgical instrument can perform surgical operation on the uterine cavity through the hysteroscope. From the inspection perspective, hysteroscopes are the first-choice inspection instruments for gynecological hemorrhagic diseases and intrauterine lesions.

Chinese patent 201710981498.8 discloses a hysteroscope, comprising: the inserting part comprises an inserting tube and an imaging module seat, and an optical imaging device and a light source are arranged in the imaging module seat; the operation part is connected to the tail end of the insertion part and comprises a handle and a handle forming a certain angle with the handle, an instrument inlet nozzle is arranged on the handle, an instrument outlet is arranged on the end face of the front end of the insertion part, and the instrument inlet nozzle is communicated with the instrument outlet through an instrument channel penetrating the interior of the handle and the inner cavity of the insertion pipe; the handle is provided with a water inlet base and a water outlet base, the front end of the insertion part is provided with a water inlet and a water outlet, and the water inlet base and the water outlet base are respectively communicated with the water inlet and the water outlet through a water inlet channel and a water outlet channel which penetrate through the inside of the handle and the inner cavity of the insertion pipe. In use, the instrument is inserted through the instrument inlet and exits through the instrument outlet. Due to the higher uterine pressure than the operating environment, water from the patient may flow along the device from the device inlet and contaminate the operator.

Therefore, there is a need for a hysteroscope that prevents water leakage

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, it is an object of the present invention to provide a hysteroscope that solves the problem of water leakage from the entrance of the device in the prior art.

In order to achieve the above and other related objects, the present invention provides a hysteroscope, comprising a hand-held portion and an insertion tube assembly connected to the hand-held portion, wherein the hand-held portion has an inner cavity, the front and rear opposite surfaces of the inner cavity have through holes for instruments to pass through, the through hole positioned in front is used as an instrument outlet for instruments to extend into the insertion tube assembly, the through hole positioned in rear is used as an instrument insertion hole, and a first sealing member for sealing the instrument outlet and a second sealing member for sealing the instrument inlet are arranged in the inner cavity, and the first sealing member and the second sealing member are both one-way valve members and have sealing ports for instruments to pass through; the inner cavity is also provided with a dividing piece which divides the inner cavity into a front cavity and a rear cavity, and the dividing piece is provided with a through hole for instruments to pass through.

Preferably, the partition member has a cylindrical section and a frustum section in the front-rear direction, the via hole is located in the cylindrical section, the cylindrical section is connected with the small-diameter end of the frustum section, and the frustum section encloses a rear cavity of the front cavity and the rear cavity.

Preferably, the dividing member is made of a hard plastic material.

Preferably, the sealing opening of the second sealing element is surrounded by a multi-disc sealing sheet.

Preferably, the instrument outlet, the instrument insertion port and the cannula assembly are coaxial.

Preferably, the handheld part is formed by connecting a rotating wheel and a shell, and the shell is connected with the cannula assembly.

Preferably, hysteroscope is still including arranging the business turn over water control assembly between handheld portion and intubate subassembly in, business turn over water control assembly includes that center tube and cover establish housing on the center tube, the housing with two independent water storage chambeies that distribute along the center tube axis have between the center tube, it is equipped with a water hole of crossing with water storage chamber and center tube hole intercommunication to correspond every water storage chamber on the center tube, it is equipped with one and the communicating coupling in water storage chamber to correspond every water storage chamber on the housing.

Preferably, the two water storage cavities are divided by a sealing ring.

Preferably, the intubate subassembly includes that the cover establishes the inner tube, outer tube and arranges the formation of image module at inner tube and outer tube front end in, the formation of image module includes: the supporting seat is provided with an instrument through channel and three mounting grooves which are arranged at the end part of the supporting seat and distributed annularly, the axis of the instrument through channel is collinear with the central axis of the intubation component, an inclined surface is arranged in the mounting groove in the middle, and the inclined surface and the axis of the instrument through channel form an acute angle; the camera is arranged in the mounting groove positioned in the middle and is fixed on the inclined surface; and the LED lamp group is arranged in the other two mounting grooves.

Preferably, the end face of the end of the support base is an inclined surface, and the inclined surface forms an obtuse angle with the axis of the instrument through channel.

Preferably, the mounting groove located in the middle has an opening opened in a circumferential direction of the support base.

Preferably, the cross-section of the inner tube and the cross-section of the instrument through channel are both elliptical.

Preferably, the supporting seat is a transparent piece.

As mentioned above, the hysteroscope of the invention has the following beneficial effects: the cavity is formed in the hand-held part and is divided into two cavities through the dividing piece in the front-back direction, so that in use, water in the uterus enters the cavity of the hand-held part due to high pressure or along with an instrument, primary pressure reduction is carried out through the cavity in the front, most of the water is remained in the cavity in the front, a little of the water enters the cavity in the back due to the pressure or the action of the instrument and further reduced pressure in the cavity in the back, a little of the water is cached in the cavity, and the water cannot leak from the second sealing piece due to high pressure.

Drawings

Figure 1 shows a partial cross-sectional view of a hysteroscope of the invention.

FIG. 2 is a diagram of an embodiment of a handheld device of the present invention.

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

Fig. 4 is a diagram illustrating an embodiment of the water inlet and outlet control assembly of the present invention.

Fig. 5 is a cross-sectional view of the water inlet and outlet control assembly of fig. 4.

FIG. 6 is a diagram illustrating one embodiment of an imaging assembly.

Fig. 7 is a cross-sectional view taken along line AA of fig. 6.

Fig. 8 is a diagram illustrating another embodiment of an imaging assembly.

Fig. 9 is a diagram of an embodiment of a hysteroscope of the invention.

Figure 10 shows an enlarged view of a portion of the hysteroscope of figure 9.

Description of the element reference numerals

100 hand-held part

101 rotating wheel

102 second seal

103 instrument insertion opening

104 rear cavity

105 front cavity

106 segmentation member

107 first seal

108 casing

109 instrument outlet

200 water inlet and outlet control assembly

201 center tube

202 transmission gear

203 cover

204. 205 water storage cavity

206. 207 pipe joint

208 sealing ring

211. 212 water through hole

300 cannula assembly

301 outer tube

302 inner tube

303 imaging module

330 inclined surface

331 supporting seat

332 instrument through passage

333 vidicon

334 inclined plane

335 LED lamp group

400 outer shell part

401 outer surface of the shell part

402 luer connector

403 pulling valve stem

404 luer fitting

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

Please refer to fig. 1 to 10. It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure, and are not used for limiting the conditions that the present disclosure can be implemented, so that the present disclosure is not limited to the technical essence, and any structural modifications, ratio changes, or size adjustments should still fall within the scope of the present disclosure without affecting the efficacy and the achievable purpose of the present disclosure. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

For convenience of description, the axial direction of the hysteroscope is referred to as the anterior-posterior direction, the end that enters the human body during diagnosis is referred to as the front end, and the end that is held by hand is referred to as the back end.

The invention provides a hysteroscope, as shown in fig. 1, comprising a hand-held part 100 and a cannula assembly 300 connected with the hand-held part, wherein a water inlet and outlet control assembly 200 is connected between the cannula assembly 300 and the hand-held part 100. A core of the present embodiment is to provide a handheld portion capable of preventing water leakage, as shown in fig. 2 and 3, the handheld portion 100 has an inner cavity, through holes for instruments to pass through are formed on front and rear opposite surfaces of the inner cavity, the through hole located at the front serves as an instrument outlet 109 of the instrument insertion tube assembly 300, the through hole located at the rear serves as an instrument insertion port 103, and a first sealing member 107 for sealing the instrument outlet 109 and a second sealing member 102 for sealing the instrument inlet 103 are formed in the inner cavity, and the first sealing member 107 and the second sealing member 102 are both one-way valve members and have sealing ports for instruments to pass through; the inner cavity is also provided with a partition 106 which divides the inner cavity into a front cavity and a rear cavity, namely an anterior cavity 105 and a posterior cavity 104 in fig. 3, and the partition 106 is provided with a through hole for instruments to pass through.

Referring to fig. 1, the cannula assembly 300 of this embodiment comprises inner and

outer tubes

302 and 301 that are nested, and in use of the hysteroscope of this embodiment, instruments are inserted from the instrument insertion port 103 on the handle 100. in this embodiment, the instrument insertion port 103 is provided at the rear end of the handle 100, water enters the uterus in a manner shared with the instrument entry channel (i.e., within the inner tube 302), and water exits the uterus through the outflow channel formed between the inner and

outer tubes

302 and 301, whereby it can be seen that the instruments are inserted from the rear end of the hysteroscope, rather than from one side thereof, which allows for the use of rigid instruments, making them more powerful and faster in treating lesions.

During the whole use, the inside of the uterus is maintained at a high pressure of up to 200mmgl, and in some cases, the doctor pulls out the instrument, and since the pressure of the uterus is higher than the operating environment, the water in the patient may flow out with it and contaminate the operator. In the embodiment, the pressure release structure is adopted in the handheld part to contain the residual water, so that the water is prevented from leaking from the appliance insertion hole 103 to influence normal use and pollute the environment. The pressure release mechanism is mainly embodied as follows: the cavity is formed in the hand-held part 100 and is divided into two cavities in the front and back direction by the dividing piece 106, so that in use, water in the uterus flows back into the cavity of the hand-held part 100 due to high pressure, the pressure is reduced for the first time through the cavity positioned in the front (namely the front cavity 105), most of the water is remained in the front cavity 105, the front cavity 105 is used as a first pressure reduction part, a little water enters the cavity positioned in the back (namely the back cavity 104) due to pressure or action of an instrument and is further reduced in the back cavity 104, the back cavity 104 is used as a second pressure reduction part, a little water is buffered at the position and does not leak from the second sealing piece 102 due to high pressure.

For better water leakage prevention, the partition 106 in this embodiment has a cylindrical section and a frustum section in the front-rear direction, the via hole is located in the cylindrical section, and the cylindrical section is connected with the small-diameter end of the frustum section, and the frustum section encloses a rear cavity 104 in the front and rear cavities. In this embodiment, the dividing member 106 is made to be substantially horn-shaped, and the small opening of the horn is located in the front, so that when water enters the front cavity 105 due to high pressure, the water collides with the outer surface of the dividing member 106 due to the horn-shaped shape to reduce pressure, that is, the water is guided and buffered in the front cavity 105, and further the function of reducing pressure and buffering is achieved; the partition 106 of this embodiment also constitutes a water return member, which facilitates guiding of the remaining water back into the front chamber 105.

In addition, the dividing piece 106 directly encloses the rear cavity 104, so that water entering the rear cavity 104 can fall off by touching the wall, and further decompression and buffering are carried out again, and the water is prevented from leaking from the instrument inlet 103 due to high pressure.

To improve the sealing performance and facilitate the passage of instruments, the cutting member 106 is made of a rigid plastic material in this embodiment. The through hole in the partition 106 is coaxial with the instrument entrance 103 to facilitate the passage of an instrument therethrough.

In order to improve the sealing performance, the sealing opening of the second sealing member 102 in this embodiment is defined by a multi-flap sealing sheet, that is, when an instrument passes through the second sealing member 102, the multi-flap sealing sheet can tightly surround the instrument, so as to achieve a tight seal. The second seal 102 may be of other configurations as well, as long as it is capable of sealing tightly around the instrument.

For operation, the instrument outlet 109, the through hole of the partition 106, and the instrument insertion opening 103 are coaxial with the cannula assembly 300 in this embodiment, so that instruments can pass in and out linearly, and insertion and use are facilitated.

For ease of manufacture and installation, referring to fig. 2 and 3, the handpiece 100 in this embodiment is formed by connecting the rotatable wheel 101 to the housing 108, the housing 108 being connected to the cannula assembly 200; the wheel 101 and the housing 108 are connected by fasteners such as screws, and the inner cavity is defined by the housing 108 and the wheel 101, which facilitates the installation of the first seal 105, the second seal 102 and the partition 106. For convenience of operation, as shown in fig. 1, the hysteroscope in this embodiment may further include a water inlet and outlet control assembly 200 disposed between the handheld portion 100 and the cannula assembly 300, as shown in fig. 4 and 5, the water inlet and outlet control assembly 200 in this embodiment includes a central tube 201 and a cover 203 sleeved on the central tube 201, two independent

water storage cavities

204, 205 distributed along the axis of the central tube 201 are disposed between the cover 203 and the central tube 201, a water through

hole

211, 212 for communicating the water storage cavity with the inner hole of the central tube is disposed on the central tube 201 corresponding to each

water storage cavity

204, 205, and a pipe joint 206, 207 for communicating with the water storage cavity is disposed on the cover 203 corresponding to each

water storage cavity

204, 205. In this embodiment, the housing 203 and the central tube 201 are sleeved to form a water storage cavity in a gap therebetween, and two independent water storage cavities are formed, so that water inlet and water outlet are independent, operation is facilitated, and water flow is not affected.

If the water storage cavity 204 is used as a water inlet cavity, the pipe joint 207 correspondingly communicated with the water storage cavity can be used as a water inlet, the water storage cavity 205 is used as a water outlet cavity, and the pipe joint 206 correspondingly communicated with the water storage cavity is used as a water outlet. To facilitate connection, the tube connector 206 may be a luer. For the convenience of production, in this embodiment, the two water storage cavities are divided by the sealing ring 208, that is, a gap between the cover 203 and the central tube 201 forms a water cavity, and is divided into two

water storage cavities

204 and 205 by the sealing ring 208. Sealing rings are arranged between the two ends of the central pipe 201 and the housing 203.

As shown in fig. 9 and 10, in order to facilitate the handling and operation, the hysteroscope of this embodiment further includes a casing 400 for facilitating the handling, which covers the handle 100 and the water inlet and outlet control assembly 200, and is integrally in the shape of a pistol grip, in which the electric control unit and the water inlet and outlet pipe members are conveniently disposed. A two-way valve is disposed in the housing 400 and is connected to the

connectors

207 and 206, respectively, and a luer connector 402 connected to a water outlet of the two-way valve is exposed outside the housing 400. As shown in fig. 10, in order to facilitate on/off control of the luer connector 402, in this embodiment, the valve cores of the two-way valves are connected to the pulling valve rod 403, and the pulling valve rod 403 is rotated to turn on or off the two-way valves, where the two-way valves are in an on state when the directions of the pulling valve rod 403 and the luer connector 402 are the same, and the two-way valves are in an off state when the pulling valve rod 403 and the luer connector 402 are at 90 °. The doctor can smoothly operate and pull the valve rod 403 with one hand to realize liquid inlet and liquid outlet. The trip valve stem 403 cooperates with the housing portion to allow the trip valve stem 403 to rotate between 0 degrees and 90 degrees, also avoiding the problem of mis-operation.

As shown in fig. 4, in this embodiment, for convenience of control, a transmission gear 202 is disposed on the central tube 201, rotation control of the imaging module can be performed by shifting the transmission gear 202, the transmission gear 202 is connected to a rotation driving mechanism, the rotation angle is recorded by the rotation driving mechanism and a potentiometer, and embedded software in the image signal processing board reads signals and performs corresponding compensation. And a rotation driving mechanism, a potentiometer, etc. may be provided in the housing part 400.

As shown in fig. 1, the tube inserting assembly 300 of the present embodiment includes an inner tube 302, an outer tube 301, and an imaging module 303 disposed at the front ends of the inner tube and the outer tube, wherein one end of the center tube 201 is communicated with the inner tube 302, and the other end of the center tube 201 is connected to the housing of the handheld portion; the cover 203 is connected to the outer tube 301. As shown in fig. 6 to 8, the present embodiment provides an imaging module with multiple viewing angles, which specifically includes:

a support seat 331, the support seat 331 having an instrument through channel 332 and three mounting slots disposed at an end of the support seat and distributed circumferentially, an axis of the instrument through channel being collinear with a central axis of the cannula assembly (i.e., coaxial and communicated with the inner tube 302), wherein an inclined surface 334 is disposed in the mounting slot located at the middle, and an included angle a between the inclined surface 334 and an axis L of the instrument through channel is an acute angle a in fig. 6;

the camera 333 is arranged in the mounting groove positioned in the middle, and the camera 333 is fixed on the inclined surface 334;

and the LED lamp group 335 is arranged in the other two mounting grooves.

In this embodiment, the camera 333 is fixed to the support base 331 by providing the mounting groove with the inclined surface 334 in the support base 331

On the inclined plane 334, the camera 333 is inclined downwards by setting the angle of the inclined plane 334, so as to meet the requirements of each view angle during diagnosis; in addition, the inclined surface 334 is arranged, so that the installation angle of the camera 333 does not need to be designed when the camera is fixed, the production and the manufacture are convenient, and the production efficiency is improved.

To better mount the LED lamp assembly 335 and make the outer diameter of the supporting base extremely small, as shown in fig. 8, the end surface of the supporting base end in this embodiment is an inclined surface 330, and the included angle between the inclined surface 330 and the axis of the hysteroscope is an angle b in fig. 8, which is an obtuse angle. Preferably, the included angle b is 150 ° to 180 °. The terminal surface of supporting seat tip is inclined surface 330 in this embodiment, and it can increase the cross section under the condition of the same external diameter of supporting seat, can be convenient for the installation of LED banks, and then makes the external diameter size of supporting seat can be little to 4mm, below even. If the inclined surface is inclined at an included angle of 150 deg., this may be achieved by increasing the surface area of the mounting surface by up to 16%, resulting in an instrument through passage with a smaller diameter or a larger internal diameter of the support base, thereby allowing a larger device or a larger water flow.

In order to facilitate the installation of the camera, as shown in fig. 7, the installation groove located in the middle of the present embodiment has an opening formed in the circumferential direction of the support base 331 so that the camera 333 can be directly inserted through the opening and fixed to the inclined surface 334. The camera 333 is clamped in the mounting groove positioned in the middle, so that the camera is convenient to fix; the camera may be fixed to the inclined surface by a technique such as adhesive.

The instrument through channel 332 is used as a water inlet channel and an instrument channel, and the cross section of the instrument through channel 332 is elliptical in the present embodiment in order to increase the water flow rate in the subsequent use. In order to prevent the camera from being affected and to enlarge the field of view, the supporting base 331 is a transparent member in this embodiment.

In this embodiment, the cross-section of the inner tube 302 and the instrument passage 332 may be oval or circular, and a rigid, semi-rigid or flexible medical instrument may be inserted therein for diagnosis.

Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. A hysteroscope comprises a handheld part and an intubation assembly connected with the handheld part, and is characterized in that the handheld part is provided with an inner cavity, the front and back opposite surfaces of the inner cavity are provided with through holes for instruments to pass through, the through hole positioned in the front is used as an instrument outlet of the intubation assembly, the through hole positioned in the back is used as an instrument insertion hole, a first sealing element for sealing the instrument outlet and a second sealing element for sealing the instrument inlet are arranged in the inner cavity, and the first sealing element and the second sealing element are both one-way valve elements and are provided with sealing ports for the instruments to pass through; the inner cavity is also provided with a dividing piece which divides the inner cavity into a front cavity and a rear cavity, and the dividing piece is provided with a through hole for instruments to pass through.

2. The hysteroscope of claim 1, wherein: the cutting piece is provided with a cylindrical section and a frustum section in the front-back direction, the through hole is located in the cylindrical section, the cylindrical section is connected with the small-diameter end of the frustum section, and the frustum section surrounds a back cavity in the front cavity and the back cavity.

3. A hysteroscope according to claim 2, wherein: the cutting member is made of hard plastic material.

4. Hysteroscope according to claim 1 or 2, characterized in that: the sealing opening of the second sealing element is surrounded by a multi-petal sealing sheet.

5. The hysteroscope of claim 1, wherein: the instrument outlet, the instrument insertion port and the cannula assembly are coaxial.

6. The hysteroscope of claim 1, wherein: the handheld part is formed by connecting a rotating wheel and a shell, and the shell is connected with the cannula assembly.

7. The hysteroscope of claim 1, wherein: hysteroscope is still including arranging into business turn over water control assembly between handheld portion and intubate subassembly in, business turn over water control assembly includes that center tube and cover establish housing on the center tube, the housing with two independent water storage chambeies that distribute along the center tube axis have between the center tube, it is equipped with a water hole of crossing that communicates water storage chamber and center tube hole to correspond every water storage chamber on the center tube, correspond every water storage chamber on the housing and be equipped with one with the communicating coupling in water storage chamber.

8. The hysteroscope of claim 7, wherein: two the water storage chamber is cut apart through the sealing washer.

9. The hysteroscope of claim 1, wherein: the intubate subassembly is including the inner tube, the outer tube that the cover was established and arrange the formation of image module at inner tube and outer tube front end in, the formation of image module includes:

the supporting seat is provided with an instrument through channel and three mounting grooves which are arranged at the end part of the supporting seat and distributed annularly, the axis of the instrument through channel is collinear with the central axis of the intubation component, an inclined surface is arranged in the mounting groove in the middle, and the inclined surface and the axis of the instrument through channel form an acute angle;

the camera is arranged in the mounting groove positioned in the middle and is fixed on the inclined surface;

and the LED lamp group is arranged in the other two mounting grooves.

10. The hysteroscope of claim 9, wherein: the end face of the end part of the supporting seat is an inclined surface, and the inclined surface forms an obtuse angle with the axis of the instrument through channel.

11. The hysteroscope of claim 9, wherein: the mounting groove located in the middle is provided with an opening part arranged in the circumferential direction of the supporting seat.

12. The hysteroscope of claim 9, wherein: the cross section of the inner tube and the cross section of the instrument through channel are both elliptical.

13. The hysteroscope of claim 9, wherein: the supporting seat is a transparent piece.