A medical endoscope

Abstract

The present invention discloses a medical endoscope, comprising a scope body and a scope sheath. The scope body comprises an operating handle and a scope tube. The scope tube penetrates into an internal channel of the scope sheath and penetrates out from an end of the scope sheath. The scope sheath comprises an inner scope sheath and an outer scope sheath. The inner scope sheath penetrates into the outer scope sheath and the outer wall of the inner scope sheath fits the mouth edge of the outlet of the end of the outer scope sheath. The outer wall of the scope tube fits the mouth edge of the outlet of the end of the inner scope sheath. The caliber of the outlet of the end of the outer scope sheath is larger than the outer diameter of the scope tube, so that a suction channel is formed between the outer scope sheath and the scope tube. A single scope body of the present invention is equipped with scope sheaths of various specifications, and the scope sheaths can be mutually fitted, fitted and connected to fill the gap between the outer wall of the scope tube of the scope body and the mouth edge of the outermost scope sheath, so as to avoid the phenomenon that the mouth edge of the scope sheath directly touches and scratches the human body. The endoscope can be directly inserted into the human body channel safely by a single scope. The insertion outer diameter of the endoscope is changed by combining a single scope body with scope sheaths of different specifications, so as to meet the requirement of using different sizes for different cases.

Description

Technical Field

[0001] The invention relates to the field of medical instruments, in particular to a medical endoscope. Background Art

[0002] In recent years, with the development of medical technology and science, a new treatment method has emerged in the medical field - minimally invasive treatment, a new treatment concept. Medical endoscopes are mainly used in surgical operations and routine medical examinations. Compared with traditional surgical operations, the functional minimally invasive surgical technology of medical endoscopes has been widely accepted by doctors and patients. Medical endoscopes use natural holes in the human body or open a few small holes when necessary. Doctors only need to skillfully insert the endoscope lens deep into the body, and through other surgical instruments and camera display systems, they can perform closed surgical operations in the body outside the body.

[0003] Generally, an endoscope includes a body and a sheath. The tube of the body is inserted into the sheath and enters the human body together through the video function of the endoscope. In order to avoid the edge of the sheath tube mouth directly touching the human body and causing scratches, the body has two specifications, namely a thick tube and a thin tube. The body of the thick tube is an entry scope, and its tube diameter is almost equal to the diameter of the sheath tube outlet of the sheath. The outer wall of the tube fits the edge of the sheath tube outlet. Therefore, when the entry scope is inserted into the sheath, the gap between the tube and the sheath tube outlet is extremely small. When the endoscope moves in the human body's channel, the tube at the front end of the sheath tube supports and opens the human body's channel. Under the tension of the human body's channel, the edge of the sheath tube mouth is not easy to directly touch and scratch the human body, thereby making the entry of the endoscope safer.

[0004] When the entry scope and the scope sheath enter the human body to the patient's site, the entry scope can be pulled out of the scope sheath, and a channel from the inside of the human body to the outside is formed in the scope sheath. At this time, the outer end of the scope sheath can be connected to a negative pressure device and the body of a thin scope tube can be inserted. The body of the thin scope tube is a working scope, and the diameter of the scope tube of the working scope is much smaller than the diameter of the channel in the scope sheath. Therefore, the remaining space in the channel forms a suction channel, and foreign matter (such as crushed kidney stones or cut tiny tissues) can be sucked out with the assistance of the working scope to complete the surgical work in the human body.

[0005] However, the sizes of the internal tubes of the human body vary, and the insertion part of the same specification of medical endoscopes are all fixed in outer diameter, and the size cannot be changed, so they cannot cover all groups. For example, the urethra of children is smaller than that of adults, so they cannot be used universally. Different parts of action cannot be covered, such as the entrance of the seminal vesicle is smaller than the ureter. If adults use an insertion part with a small diameter, the tube strength will be insufficient, and when entering the human body, the tube will bend in the shape of the ureter, etc. The tube is close to the human tissue, and the lens end will be wrapped by the human tissue, resulting in the field of view not being able to be effectively presented according to the user's wishes.

[0006] The above situation will force medical institutions to purchase endoscopes of different specifications and types. Among endoscopes, the manufacturing cost of the mirror body is particularly high, which leads to the high price of endoscopes, so the cost of purchasing endoscopes is very high. In addition, the use methods of endoscopes of different specifications and types are different, which will also increase the risks during the operation. Summary of the invention

[0007] In order to overcome the deficiencies of the prior art, the present invention provides a medical endoscope with strong versatility.

[0008] The technical solution adopted by the present invention to solve its technical problem is:

[0009] A medical endoscope comprises a body and a sheath, wherein an image transmission component and a lighting component are arranged on the body, wherein the body comprises an operating handle and a mirror tube, wherein the mirror tube penetrates into an internal passage of the mirror sheath and passes out from an end of the mirror sheath, wherein the mirror sheath comprises an inner sheath and an outer sheath, wherein the inner sheath penetrates into the outer sheath and the outer wall of the inner sheath fits the edge of the mouth of the outlet at the end of the outer sheath, wherein when the mirror tube penetrates into the inner sheath, the outer wall of the mirror tube fits the edge of the mouth of the outlet at the end of the inner sheath, and when the mirror tube penetrates into the outer sheath retained in the human body, the caliber of the outlet at the end of the outer sheath is larger than the outer diameter of the mirror tube, thereby forming a suction channel between the outer sheath and the mirror tube.

[0010] The end entrances of the inner and outer mirror sheaths are provided with mounting components to realize the combination of the inner and outer mirror sheaths or the fixation of the inner mirror sheath and the mirror tube.

[0011] The endoscope sheath comprises an inner sheath tube and an endoscope sheath handle. The endoscope sheath handle has an inner hole as an end entrance of the endoscope sheath. One end of the inner sheath tube is connected to the inner hole and fixedly connected to the endoscope sheath handle, and the other end forms the end exit of the endoscope sheath.

[0012] The endoscope sheath handle includes a card-mounted inner core and an outer sleeve slidably mounted on the card-mounted inner core, the inner hole is the central hole of the card-mounted inner core, a circle of circular holes is arranged on the hole wall and a card bead is installed in the circular hole, the card bead can move radially in the inner hole along the circular hole relative to the inner hole, a spring is arranged between the outer sleeve and the card-mounted inner core to enable the outer sleeve to realize elastic reset movement relative to the card-mounted inner core, the outer sleeve is convexly provided with a ring platform corresponding to the card bead, and the end of the mirror tube close to the operating handle is provided with a plug column that cooperates with the card-mounted inner core, and the plug column is provided with a ring groove for the card bead to be inserted.

[0013] The inserting column is provided with a positioning boss on the annular groove, and the endoscope sheath handle is provided with a positioning groove for the positioning boss to slide into.

[0014] The outer mirror sheath comprises an outer mirror sheath tube and an outer mirror sheath handle. The outer mirror sheath handle has an inner hole as the outer mirror sheath end entrance. One end of the outer mirror sheath tube is connected to the inner hole and fixedly connected to the outer mirror sheath handle, and the other end forms the outer mirror sheath end exit.

[0015] The outer mirror sheath handle includes a handheld sleeve and a rotating inner core rotatably connected in the handheld sleeve, the inner hole is the center hole of the rotating inner core, the center hole is a stepped hole and a card table extends radially from the inner wall of the large hole, the inner mirror sheath handle extends toward the outer mirror sheath handle with a clamping sleeve, the outer wall of the clamping sleeve is provided with a clamping groove, the clamping sleeve is inserted into the center hole, and the rotating inner core rotates to make the clamping table fit into the clamping groove.

[0016] A handle is also provided on the rotating inner core.

[0017] The ferrule is provided with an identification groove, the rotating inner core is provided with an identification boss, and the ferrule passes through the identification groove and over the identification boss and is inserted into the center hole.

[0018] The beneficial effects of the present invention are as follows: a single endoscope body of the present invention is equipped with sheaths of various specifications, and the endoscope body and the sheath, as well as the sheaths, can be fitted and connected with each other, thereby avoiding the phenomenon that the edge of the mouth of the sheath directly touches and scratches the human body, and the endoscope can safely enter the human body's channels without the need for an additional entry scope; on the other hand, the insertion outer diameter of the endoscope is changed by combining sheaths of different specifications with a single endoscope body, thereby meeting the requirements of using different sizes for different cases; the above technical effects all reflect that the present invention has a strong versatility, and compared with the previous situation of using endoscopes of different specifications and types according to different surgical conditions, the purchase cost of the endoscope is greatly saved; and a single endoscope can match different surgical conditions, and the method of use is unified, thereby reducing the surgical risks increased by changing the type and specifications of the endoscope. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the present invention from another perspective;

[0022] Figure 3 It is a schematic diagram of the splitting of the present invention;

[0023] Figure 4 is a cross-sectional view of the present invention;

[0024] Figure 5 yes Figure 2 A magnified image of point A;

[0025] Figure 6 yes Figure 4 The enlarged view of point B;

[0026] Figure 7 This is a schematic diagram of the disassembly of the endoscope sheath handle;

[0027] Figure 8 This is a schematic diagram of the disassembly of the outer mirror sheath handle. DETAILED DESCRIPTION

[0028] Reference Figures 1 to 6 A medical endoscope includes a body 1 and a sheath 2. The body 1 is provided with an image transmission component 3 and an illumination component 4. The body 1 includes an operating handle 11 and a mirror tube 12 that penetrates into the inner channel of the sheath 2. The end of the mirror tube is a visual lens. The sheath 2 includes an inner sheath 21 and an outer sheath 22. The inner sheath 21 penetrates into the outer sheath 22 and the outer wall of the inner sheath 21 fits the mouth edge of the outer sheath end outlet 222. The outer wall of the mirror tube 12 fits the mouth edge of the inner sheath end outlet 212. The caliber of the outer sheath end outlet 222 is larger than the outer diameter of the mirror tube 12, that is, the inner diameter of the outer sheath 22 is larger than the outer diameter of the mirror tube 12. A suction channel is formed between the outer sheath 22 and the mirror tube 12. After the scope body 1 passes through the inner sheath 21 and the outer sheath 22 respectively, the gaps between the outer wall of the scope tube 12 and the inner sheath outlet, and between the outer wall of the inner sheath and the outer sheath outlet are extremely small. The edges of the inner and outer sheath tube openings are not easy to directly touch and scratch the human body. Under the video function of the scope body, the endoscope can safely and smoothly enter the patient's body to start surgery.

[0029] Before starting the operation, the inner scope sheath 21 and the scope body 1 are first pulled out, and the scope body 1 is reinserted into the outer scope sheath 22 retained in the human body. At the same time, the outer end of the outer scope sheath 22 can be connected to a negative pressure device to generate negative pressure suction in the suction channel of the outer scope sheath 22. Taking kidney stone surgery as an example, a holmium laser guide wire is inserted into the working channel of the scope body 1, and the stones are crushed by laser under the video function of the scope body 1, and the crushed stones will be sucked away by the suction channel.

[0030] Since the sizes of the internal channels of the human body are different, when inserting the endoscope for different individuals, the scope body 1, the internal sheath 21, and the external sheath 22 can be assembled in sequence according to normal steps to form an endoscope of regular size and start inserting the endoscope; when the external sheath 22 cannot enter the narrow internal channel and the scope is held, the scope can be withdrawn first, and the external sheath 22 can be removed, leaving the scope body 1 with the internal sheath 21. At this time, the outer diameter of the endoscope becomes smaller, and it can re-enter the internal channel for microscopic examination and evaluation. When it is assessed that the external sheath 22 cannot enter the human body, the traditional surgical method is used to directly break the stone and complete the operation. What's more, when the scope body 1 with the internal sheath 21 also cannot enter the internal channel, the internal sheath 21 can be further removed, and the channel can be directly entered through the scope tube of the scope body 1 for microscopic examination and evaluation, and whether to choose other surgical methods, such as ultrasound or placing a channel stent, can be considered.

[0031] The above technical effects can be achieved by equipping a single endoscope body with sheaths of various specifications, which has strong versatility. Compared with the previous situation of using endoscopes of different specifications and types according to different surgical conditions, the cost of purchasing endoscopes is greatly saved. On the other hand, according to the strong versatility of the present invention, a single endoscope can be matched with different surgical conditions, and the method of use is unified, reducing the surgical risks caused by changing the type and specifications of the endoscope.

[0032] As a preferred embodiment of the present invention, mounting components are provided at the end entrances of the inner and outer mirror sheaths to realize the combination of the inner and outer mirror sheaths or the fixation of the inner mirror sheath and the mirror tube 12, so that the operation can be performed more stably when inserting the mirror during surgery. Figure 7 , Figure 8 As shown, it is a preferred embodiment of the mounting components on the inner and outer mirror sheaths:

[0033] The endoscope sheath 21 includes an inner sheath tube 211 and an endoscope sheath handle 214 . The endoscope sheath handle 214 has an inner hole as an endoscope sheath end inlet 213 . One end of the inner sheath tube 211 is connected to the inner hole and fixedly connected to the endoscope sheath handle 214 , and the other end forms the endoscope sheath end outlet 212 . The endoscope sheath handle 214 includes a clamping inner core 215 and an outer sleeve 216 slidably mounted on the clamping inner core 215. The inner hole is the central hole of the clamping inner core 215. A circle of circular holes is arranged on the hole wall and a clamping bead 217 is installed in the circular hole. The clamping bead 217 can move radially in the inner hole along the circular hole relative to the inner hole. A spring is arranged between the outer sleeve 216 and the clamping inner core 215 to enable the outer sleeve 216 to achieve elastic reset movement relative to the clamping inner core 215. The outer sleeve 216 is convexly provided with a ring platform 218 corresponding to the clamping bead 217. The end of the mirror tube 12 close to the operating handle 11 is provided with a plug post 121 which is fixed with the clamping inner core 215, and the plug post 121 is provided with a ring groove 122 for the clamping bead 217 to be clamped. Since a spring is installed between the outer sleeve 216 and the card-mounted inner core 215, the outer sleeve 216 is limited to move relative to the card-mounted inner core 215 only toward one side of the spring; after the outer sleeve 216 is moved, the annular platform 218 on the inner wall of the outer sleeve 216 leaves the range of the card bead 127, so that the card bead 127 can move freely in the circular hole of the card-mounted inner core 215, and the card bead 127 can be inserted into or removed from the annular groove 122; after loosening the outer sleeve 216, the outer sleeve 216 is reset under the action of the spring, and at the same time, the annular platform 218 is set on the back of the card bead 127, so that a whole circle of card beads 127 are inserted into the annular groove 122, thereby realizing the assembly and fixation of the inner mirror sheath 21 and the mirror body 1. Furthermore, in order to achieve circumferential positioning of the inner mirror sheath 21 equivalent to the mirror body 1, a positioning boss 123 is provided on the plug post 121 located above the annular groove 122, and a positioning groove for the positioning boss 123 to slide into is provided on the inner mirror sheath handle 214, and circumferential limiting is performed by the cooperation of the positioning boss 123 and the positioning groove.

[0034] The outer mirror sheath 22 comprises an outer mirror sheath tube 221 and an outer mirror sheath handle 224, wherein the outer mirror sheath handle 224 has an inner hole as an outer mirror sheath end entrance 223, one end of the outer mirror sheath tube 221 is connected with the inner hole and fixedly connected with the outer mirror sheath handle 224, and the other end forms an outer mirror sheath end exit 222. The outer mirror sheath handle 224 comprises a hand-held sleeve 225 and a rotating inner core 226 rotatably connected in the hand-held sleeve 225, wherein the inner hole is the central hole of the hand-held sleeve 225, and the rotating inner core 226 has a card table 227 extending radially toward the center of the central hole, and the inner mirror sheath handle 214 has a card sleeve 219 extending toward the outer mirror sheath handle 224, and a card slot is provided on the outer wall of the card sleeve 219, and the card sleeve 219 is inserted into the central hole, and the rotating inner core 226 rotates to make the card table 227 snap into the card slot, thereby completing the assembly and fixation of the outer mirror sheath 22 and the inner mirror sheath 21. The rotating inner core 226 is also provided with a handle 228 to assist the movement of the rotating inner core 226. The ferrule 219 is provided with an identification groove, and the rotating inner core 226 is provided with an identification boss 229. The ferrule 219 passes through the identification groove and over the identification boss 229 and is inserted into the center hole, so that the inner mirror sheath 21 can be inserted into the outer mirror sheath 22 in a unique way and achieve circumferential limit.

Claims

1. A medical endoscope, comprising a scope body (1) and a scope sheath (2), wherein the scope body (1) is provided with an image transmission assembly (3) and an illumination assembly (4), wherein the scope body (1) comprises an operating handle (11) and a scope tube (12), wherein the scope tube (12) penetrates into an internal passage of the scope sheath (2) and passes out from an end of the scope sheath (2), wherein: The scope sheath (2) comprises an inner scope sheath (21) and an outer scope sheath (22); the inner scope sheath (21) is inserted into the outer scope sheath (22) and the outer wall of the inner scope sheath (21) fits the edge of the mouth of the outer scope sheath end outlet (222); when the scope tube (12) is inserted into the inner scope sheath (21), the outer wall of the scope tube (12) fits the edge of the mouth of the inner scope sheath end outlet (212); when the scope tube (12) is inserted into the outer scope sheath (22) retained in the human body, the caliber of the outer scope sheath end outlet (222) is larger than the outer diameter of the scope tube (12), so that a suction channel is formed between the outer scope sheath (22) and the scope tube (12); The endoscope sheath (21) comprises an inner sheath tube (211) and an inner sheath handle (214); the inner sheath handle (214) has an inner hole as an end entrance (213) of the inner sheath tube; one end of the inner sheath tube (211) is in communication with the inner hole and fixedly connected to the inner sheath handle (214); the other end forms the end exit (212) of the inner sheath tube; the outer sheath (22) comprises an outer sheath tube (221) and an outer sheath handle (224); the outer sheath handle (224) has an inner hole as an end entrance (223) of the outer sheath tube (221); one end of the outer sheath tube (221) is in communication with the inner hole and fixedly connected to the outer sheath handle (224); the other end forms the end exit (222) of the outer sheath tube; the end entrances of the inner and outer sheaths are provided with mounting components to realize the combination of the inner and outer sheaths or the fixation of the inner sheath and the mirror tube (12).

2. The medical endoscope according to claim 1, characterized in that: The endoscope sheath handle (214) comprises a clamping inner core (215) and an outer sleeve (216) slidably mounted on the clamping inner core (215); the inner hole is the central hole of the clamping inner core (215); a circle of circular holes is arranged on the hole wall and a clamping bead (217) is installed in the circular hole; the clamping bead (217) can move radially in the inner hole along the circular hole relative to the inner hole; a spring is arranged between the outer sleeve (216) and the clamping inner core (215) so that the outer sleeve (216) can realize elastic reset movement relative to the clamping inner core (215); the outer sleeve (216) is provided with a ring platform (218) corresponding to the clamping bead (217); the end of the mirror tube (12) close to the operating handle (11) is provided with a plug post (121) which is matched with the clamping inner core (215) and fixed; the plug post (121) is provided with a ring groove (122) for the clamping bead (217) to be clamped.

3. The medical endoscope according to claim 2, characterized in that: The inserting column (121) is provided with a positioning boss (123) located above the annular groove (122), and the endoscope sheath handle (214) is provided with a positioning groove for the positioning boss (123) to slide into.

4. The medical endoscope according to claim 1, characterized in that: The outer mirror sheath handle (224) comprises a hand-held sleeve (225) and a rotating inner core (226) rotatably connected to the hand-held sleeve (225); the inner hole is the central hole of the hand-held sleeve (225); the rotating inner core (226) is provided with a clamping table (227) radially extending toward the center of the central hole; the inner mirror sheath handle (214) is provided with a clamping sleeve (219) extending toward the outer mirror sheath handle (224); a clamping groove is provided on the outer wall of the clamping sleeve (219); the clamping sleeve (219) is inserted into the central hole; the rotating inner core (226) is rotated to make the clamping table (227) clamp into the clamping groove.

5. The medical endoscope according to claim 4, characterized in that: The rotating inner core (226) is also provided with a dial handle (228).

6. The medical endoscope according to claim 4, characterized in that: The ferrule (219) is provided with an identification groove, the rotating inner core (226) is provided with an identification boss (229), and the ferrule (219) passes through the identification groove and over the identification boss (229) to be inserted into the center hole.

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