FIELD OF THE INVENTION

The present invention relates to the field of medical equipment, and in particular to a protective sheath, a hysteroscope equipped therewith, and a use method of the protective sheath.

BACKGROUND OF THE INVENTION

An endoscope is a kind of light source endoscope that is mainly used for in vivo inspection and treatment of human body. The endoscope enters the human body via the front of a lens body, it becomes the preferred inspection method for internal lesions of the human body because of intuitive and accurate. However, in the prior art, during the in vivo inspection of a body of the patient, it is usually necessary to stretch the endoscope into the body of the patient at first to enter the human body, so as to observe the patient, after a lesion is found, the endoscope is taken out to treat the patient, or, the endoscope is reserved in the body of the patient, and then a treatment instrument is stretches into the body of the patient to treat the patient. During the diagnosis and treatment, it is usually necessary to inject normal saline into the body of the patient to expand the uterus, the liquid in the body of the patient will flow out from the body to pollute the endoscope after the expansion of the uterus. In use, the endoscope is often connected to a display by an electrical connecting line, and the dirt flowing out from the body of the patient is extremely likely to cause pollution to the electrical connecting line and is also prone to a short circuit.

An existing first embodiment discloses an endoscope, including a mirror sheath and sight glass, the sight glass is disposed in the mirror sheath, an inner sheath and an outer sheath are disposed at the outside of the mirror sheath, a water inlet and a water outlet are disposed on the outer sheath, an operation electrode is disposed between the sight glass and the inner sheath, the operation electrode is connected with an operation handle disposed at the outside of the mirror sheath, a slide block is movably disposed at the outside of the sight glass, a suction tube for adsorbing tissues is arranged between the sight glass and the inner sheath, and a baffle for opening and closing the port of the suction tube is movably disposed in the suction tube.

An existing second embodiment discloses an endoscope, including insertion tube, a camera, a light source and a display portion, the camera and the light source are disposed at an insertion end of the insertion tube, a display portion is disposed at a rear end of the insertion tube, the display portion is connected with the camera, the endoscope further includes: a ring removing device, disposed in the insertion tube and capable of protruding from the insertion tube from the insertion end of the insertion tube or retracting into the insertion tube; and an extension and retraction-clamping control device, connected with the ring removing device, and capable of controlling the ring removing device to extend out from the insertion end of the insertion tube or retract into the insertion tube, and controlling the ring removing device to clamp a contraceptive ring when the ring removing device extends out.

An existing third embodiment discloses a medical surgical mirror, and particularly relates to an endoscope applied to gynecological minimally invasive surgery. The endoscope includes a mirror tube, an objective lens is disposed at one end of the mirror tube, the other end of the mirror tube is connected with a main body, the mirror tube includes a bent segment and a straight line segment, the bent segment is provided with an objective lens and a prism, the straight line segment is connected with the main body, an imaging channel and a working channel, parallel to each other, are disposed in the mirror tube, the imaging channel and the working channel pass through the entire mirror tube, the objective lens is located at the end portion of the imaging channel, a prism and an image transmission optical fiber are further disposed in the imaging channel, a light transmitting bundle interface is disposed on the main body, a light transmitting bundle is disposed in the light transmitting bundle interface, and the light transmitting bundle is located in the mirror tube. The utility model provides an endoscope, which is simple in structure, convenient to operate and accurate to locate, and can cooperate with different instruments for use; and the technical problems that the endoscope in the prior art is complicated in structure and inconvenient to operate, and that cannot cooperate with different instruments for use are solved.

An existing fourth embodiment discloses a medical device, specifically an endoscope water leakage prevention device, including a transparent film that can be attached to the vulva, an endoscope operation support is disposed at the central position of the transparent film, an operation hole is formed in the middle of the operation support, a rubber plug for sealing the hole is cooperatively disposed in the operation hole, and after the rubber plug is hermetically sheathed on an endoscope, the endoscope can pass through the operation support to stretch into the uterine cavity.

The endoscope is more complicated to operate in actual use, and can only prevent the liquid from flowing out from the patient to a certain extent, so that the safety and reliability are relatively low.

In the prior art taking the above-mentioned endoscope as an example, the electrical connecting line is inevitably contaminated by the dirt flowing out from the body of the patient, which is not only prone to short-circuit and other dangers to damage the electrical appliances, and also easily contaminates the clothes of the user. In addition, because the electrical connecting line is not easy to sterilize, it is prone to secondary pollution.

SUMMARY OF THE INVENTION

The present invention discloses a protective sheath, including an inner sheath and an outer sheath, which are sleeved together, the outer sheath has a cylindrical structure, the inner sheath includes a straight cylindrical portion and a bell mouth portion, the bell mouth portion is located on an insertion end side of the inner sheath, a side wall of the bell mouth portion is provided with a plurality of grooves extending from the bell mouth portion to the straight cylindrical portion, and a plurality of elastic sheets are formed at the insertion end of the inner sheath; the straight cylindrical portion is located on a non-insertion end side of the inner sheath;

a hollow cavity is disposed between the inner sheath and the outer sheath, and a compressed waterproof jacket is disposed in the hollow cavity, the waterproof jacket has a tubular structure, one end of the waterproof jacket is fixedly sheathed on the inner sheath, the other end of the waterproof jacket can be pulled out from a non-insertion end of the protective sheath, so that the waterproof jacket is pulled out from the hollow cavity.

Preferably, the number of the elastic sheets is an even number.

Further, two adjacent elastic sheets are regarded as an elastic sheet group, one elastic sheet in the elastic sheet group is formed with a protrusion on an outer surface of the bell mouth portion, a groove is formed in a position corresponding to the protrusion on an inner surface of the outer sheath, and when the inner sheath is completely sheathed in the outer sheath, the protrusion is inserted into the groove.

Preferably, a connecting portion is formed on the other elastic sheet in the elastic sheet group, the connecting portion is located at the boundary between the straight cylindrical portion and the bell mouth portion, and the connecting portion is a convex portion protruding toward the axis of the inner sheath.

Preferably, one end of the waterproof jacket is fixed at the non-insertion end of the inner sheath.

Preferably, the bell mouth portion of the inner sheath is provided with an annular sealing ring to cover the top of the bell mouth portion.

Preferably, the protective sheath is provided with an unsealing portion, the unsealing portion is fixedly connected with the waterproof jacket, and the waterproof jacket can be pulled out from the hollow cavity by pulling the unsealing portion.

The protective sheath can effectively protect the electrical connecting line, prevent the electrical connecting line from being polluted by the dirt. It has a simple structure, be convenient to use, and does not cause economic pressure on the patient.

The present invention further provides a hysteroscope, including an insertion tube and a handle connected with a non-insertion end of the insertion tube, a camera module seat is fixedly disposed at an insertion end of the insertion tube, a camera and a light source are disposed in the camera module seat, and the camera and the light source are electrically connected with a self-locking quick connector disposed on the handle, and the protective sheath as described above is sheathed at the outside of the self-locking quick connector;

the handle takes the shape of a gun, the handle includes a connecting portion connected with the insertion tube and a gripping portion, and a first instrument mouth is disposed at an upper end of the connecting portion; a water inlet base and a water outlet base are disposed at a lower end of the gripping portion, and valve switches are respectively disposed on the water inlet base and the water outlet base;

a water inlet tube is disposed in the water inlet base, a water outlet tube is disposed in the water outlet base, the water inlet tube and the water outlet tube are both disposed in the insertion tube and extend along the insertion tube, one end of the water inlet tube and one end of the water outlet tube are both disposed on an end face of the insertion end of the camera module seat, and the other end of the water inlet tube and the other end of the water outlet tube respectively communicate with the water inlet base and the water outlet base; and

a first instrument tube is also disposed in the insertion tube, an instrument outlet of the first instrument tube is disposed on the end face of the insertion end of the camera module seat, and an instrument inlet of the first instrument tube communicates with the first instrument mouth; and a water retaining ring is sheathed at the outside of the non-insertion end of the insertion tube, and the water retaining ring can move along the axis of the insertion tube.

Preferably, a convex portion is formed on the inner wall of the inner sheath of the protective sheath, a concave portion is disposed at a corresponding position on the outer surface of the self-locking quick connector, and the convex portion can be clamped in the concave portion.

The present invention further provides a nephroscope, including an insertion tube and a handle connected with a non-insertion end of the insertion tube, a tip head is fixedly disposed at a front end of the insertion tube, and the tip head is provided with an instrument tube mounting channel for inserting an instrument tube and a camera module mounting channel for mounting a camera module; the handle is connected to a tail end of the insertion tube through a rigid connecting piece, a rear end of the handle is provided with a self-locking quick connector for connecting a display device, and the protective sheath as described above is sheathed at the outside of the self-locking quick connector;

wherein, a front end face of the tip head of the insertion tube is provided with an instrument outlet, a rear end face of the handle is provided with a corresponding instrument inlet, the instrument inlet is inserted into the handle to communicate with an instrument tube in the insertion tube, an acute included angle between the section axis of the instrument inlet and the section axis of an instrument catheter in the handle is less than 15 degrees.

Preferably, a convex portion is formed on the inner wall of the inner sheath of the protective sheath, a concave portion is disposed at a corresponding position on the outer surface of the self-locking quick connector, and the convex portion can be clamped in the concave portion.

The present invention further provides a use method of the protective sheath, including the following steps:

1. making the insertion end of the protective sheath face to the self-locking quick connector of the hysteroscope or the nephroscope, and sheathing the same at the outside of the self-locking quick connector, until the connecting portion is clamped with the self-locking quick connector;

2. forming a plugging connection between an electric transmission line and the self-locking quick connector; and

3. holding the unsealing portion to pull out the waterproof jacket to sheath the electric transmission line.

As mentioned above, the protective sheath and the hysteroscope with the protective sheath involved in the present invention are simple in structure, light in weight, small in volume and easy to operate, and can effectively protect the electrical connecting lines from being contaminated during use, thereby preventing short circuit, contamination and other situations, furthermore, the protective sheath and the hysteroscope are low in production costs and can be used as disposable medical devices.

In order to make the above contents of the present invention more comprehensible, preferred embodiments are listed below and are described in detail below in combination with the drawings.

