CN112741951A - Digestive tract dilator - Google Patents

Abstract

Translated fromChinese

本发明提供了一种消化道撑开器，包括牵引索、远端与所述的牵引索的远端相固定设置的具有打开状态和收拢状态的支架、滑动套设在所述的牵引索上且远端与所述的支架的近端相固定连接的推送管、滑动套设在所述的推送管上的鞘管、与所述的鞘管的近端相固定连接的操作手柄，所述的操作手柄包括与所述的鞘管相固定连接的壳体、与所述的壳体相滑动连接的滑块、与所述的滑块相连接且能够带动所述的滑块滑动的操控钮，所述的推送管与所述的滑块相固定连接。本发明的结构简单，操作便利，效果明显，能够将消化道沿径向撑开，有助于嵌顿异物从粘膜层松脱。

The invention provides a digestive tract spreader, comprising a traction cable, a bracket with an open state and a retracted state whose distal end is fixedly arranged with the distal end of the traction cable, and a sliding sleeve is provided on the traction cable And the push tube that the distal end is fixedly connected to the proximal end of the support, the sheath tube that is slidably sleeved on the push tube, the operating handle that is fixedly connected to the proximal end of the sheath tube, the described The operating handle includes a casing that is fixedly connected to the sheath tube, a sliding block that is slidably connected to the casing, and a control button that is connected to the sliding block and can drive the sliding block to slide. , the push pipe is fixedly connected with the slider. The invention has the advantages of simple structure, convenient operation and obvious effect, and can stretch the digestive tract along the radial direction, thereby helping the incarcerated foreign body to be released from the mucosal layer.

Description

Digestive tract dilator

Technical Field

The invention particularly relates to a digestive tract dilator.

Background

The taking of foreign bodies from food feeding channels under the endoscope is one of the most common outpatient and emergency endoscopic operations, and even needs hospitalization when the conditions are complicated. There are 3 physiological stenoses in the esophagus: respectively at the entrance of the esophagus, at the intersection with the aortic arch and the left main bronchus, and at the esophageal fissure of the diaphragm. Foreign bodies are easily lodged in these physiological stenoses, the first one being the narrowest part of the esophagus and the most commonly lodged position of esophageal foreign bodies. 1190 patients admitted to the hospital for esophageal foreign body management during the years 2011-07/2017-07 were analyzed at the first subsidiary hospital of Zhengzhou university, and 70% of esophageal foreign bodies were embedded therein.

The sources of esophageal foreign bodies are various and are distributed regionally. In the inland area of China, the main sources of esophageal foreign body incarceration are jujube pits, chicken bones and the like, and the accumulation accounts for 52 percent; and the fish bones (fish bones, turtle shells, shrimp and crab shells and the like) can account for more than 43 percent in coastal areas. The common feature of the foreign body easy to cause incarceration is that a sharp end is commonly existed, so that the damage of the esophagus mucous membrane is easily caused, and more serious complications are caused.

Gastrointestinal endoscopy is the most prominent treatment for esophageal foreign body impaction. However, since the incarceration foreign body often has a sharp end penetrating into the esophageal mucosa, the foreign body is difficult to be directly taken out by using the existing foreign body forceps and other equipment, and the injury of the esophageal mucosa is easily expanded in the process of forcibly pulling out or pushing in the foreign body upwards, and even more serious complications are caused.

The main problem of the prior art in dealing with the insertion of a foreign body in the esophagus is that the force can be applied only in the direction perpendicular to the esophagus (pulling out or pushing in), but not in the direction horizontal to the esophagus (spreading the esophagus aside). If there is a kind of equipment, can be in the direction of level in the esophagus, strut the esophagus along the foreign matter major axis, can make the sharp end of foreign matter separate out but can not further enlarge the mucous membrane damage from the esophagus mucous membrane that pierces, and at gravity, esophagus wriggle and/or under the effect of external force change direction, make the sharp end of foreign matter put along perpendicular esophagus direction more easily, just so can be safer use equipment such as foreign matter pincers to take out the foreign matter.

Disclosure of Invention

The invention aims at the problems and provides a digestive tract dilator which can radially dilate the esophagus so as to be beneficial to loosening embedded foreign bodies from a mucous membrane layer without influencing the operation of a shell operator.

In order to solve the technical problems, the invention adopts the following technical scheme:

the utility model provides a alimentary canal struts ware, including haulage cable, distal end with the distal end of haulage cable fixed mutually set up have an open mode and a furl state support, slip cover establish the haulage cable on and the distal end with the near-end looks fixed connection's of support propelling movement pipe, slip cover establish the propelling movement pipe on sheath pipe, with the near-end looks fixed connection's of sheath pipe operating handle, operating handle include with sheath pipe looks fixed connection's casing, with casing looks sliding connection's slider, with the slider be connected and can drive the gliding button of controlling of slider, propelling movement pipe with slider looks fixed connection.

When the alimentary canal spreader is in a non-working state, the bracket is restrained in the sheath tube and is kept in a furled state, when the alimentary canal spreader is used, an operator can probe the sheath tube into the far end of a foreign body in the alimentary canal of a patient with the help of a laryngoscope, then the operating button is operated to drive the sliding block to slide towards the far end, so that the pushing tube is driven to slide towards the far end, the bracket extends out of the sheath tube, the bracket is expanded to an open state, the alimentary canal is supported, and the opening state of the bracket is provided with the holes, so that the smooth air passage in the alimentary canal can be ensured, and the observation of the far end mucous membrane state of the alimentary canal by the operator can not be. After the picking-up is completed, the operator drives the slide block to slide towards the near end by poking the control button back, and further drives the pushing tube to slide towards the near end, so that the support is retracted into the sheath tube again, and the whole set of equipment can be easily taken out from the digestive tract.

Preferably, the stent is made of metal (such as nickel-titanium alloy) and nonmetal with memory effect and super-elastic characteristics, which can realize self-expansion.

Preferably, the stent is in the open state in the form of a cage, which is shaped to be expanded during production, and the diameter of the stent in the expanded state may be of various sizes to accommodate different alimentary canal sizes.

Preferably, the pushing tube passes through the sliding block, the operating handle further comprises a first elastic piece which is sleeved on the pushing tube, and two ends of the first elastic piece are respectively abutted to the sliding block or the proximal end of the operating button and the shell, so that the sliding block and the pushing tube can be driven to move towards the distal end in an auxiliary manner.

Preferably, the pulling cable passes through the sliding block, the operating handle further comprises a knob rotatably connected with the housing, a limiting block rotatably connected with the knob and capable of moving along the axial direction of the housing along with the rotation of the knob, and a second elastic member having two end portions respectively connected with the limiting block and the pulling cable, and when the operating knob is operated to release the bracket and the fine adjustment is still required, the knob can be rotated to apply a pulling force to the pulling cable, so as to finely adjust the supporting force and the supporting radius of the bracket.

Further preferably, the knob and the housing are rotatably connected by a screw thread.

Preferably, the manipulation knob includes a push knob slidably connected to the housing along an axial direction of the housing, a first ejector block located at a distal end of the push knob, a second ejector block located at a proximal end of the push knob, and an avoidance groove formed on the first ejector block and the second ejector block for avoiding the push tube, and the slider is engaged between the first ejector block and the second ejector block so that the slider can slide along with the manipulation knob along the axial direction of the housing.

Further preferably, the operating handle further comprises a locking assembly disposed between the operating knob and the housing for locking the relative positions of the operating knob and the housing, and a third elastic member for providing the operating knob with a movement toward a state of being locked with the housing. Under the action of the elastic force of the third elastic piece, the control button is pushed outwards and abuts against the shell in a natural state, at the moment, the locking assembly is in a locking state, and the control button cannot slide along the axial direction of the shell; when the operator presses the control button, the control button slides inwards relative to the shell to enable the locking assembly to be in an unlocked state, and at the moment, the control button can slide along the axial direction of the shell so as to enable the bracket to be switched between an opened state and a folded state.

More preferably, the control knob further comprises a platform whose inner side surface is respectively fixedly connected with the first ejector block and the second ejector block, and a boss which is fixedly connected with the outer side surface of the platform and extends along the radial direction of the shell, and the boss is fixedly connected with the push knob; the locking assembly comprises a first tooth formed on the outer side surface of the platform, and a second tooth formed on the inner surface of the shell and capable of being meshed with the first tooth; the third elastic piece is arranged between the platform and the sliding block; when said first tooth and said second tooth are engaged, said locking assembly is in a locked condition; when the first tooth and the second tooth are separated, the locking assembly is in an unlocked state.

More preferably, the avoiding groove is elongated, and the length direction of the avoiding groove is consistent with the elastic force direction of the third elastic part, so that the control button can be opposite to the sliding block along the radial direction of the shell without interference when the control button is switched between the locking state and the unlocking state.

More preferably, the slider comprises a slider body, a wing part formed on the slider body and extending outwards, a first mounting hole formed on the slider body and used for mounting the pushing pipe, a second mounting hole formed on the slider body and used for mounting the third elastic element, and the operating handle further comprises a sliding groove formed on the housing and capable of being matched with the wing part, so that the slider cannot be jammed when sliding along the axial direction of the housing; the pushing pipe and the traction cable penetrate through the first mounting hole, and the pushing pipe can be fixed on the sliding block in a bonding or screw fixing mode and the like.

Preferably, the digestive tract dilator further comprises an oval guider fixedly arranged at the distal end of the traction cable, so as to reduce the damage to the mucous membrane and other tissues when the instrument moves in the cavity.

Preferably, the pushing tube includes, but is not limited to, hollow tubular materials with a length direction rigidity much higher than a vertical axial rigidity, such as a hypotube, a snake bone tube, a gooseneck tube, a spiral tube, a metal mesh reinforced PTFE tube, and the like, and the material of the pushing tube may be stainless steel or other flexible metals or non-metals, which can provide reliable pushing force in an axial direction and ensure flexibility in a radial direction to meet the requirement of forward and backward movement of the instrument in a complete digestive tract.

The distal end and the proximal end are defined by the end far away from the operator as the distal end and the end near the operator as the proximal end when the operator operates the digestive tract dilator, the inside is the position relatively close to the axial lead of the operating handle, and the outside is the position relatively far away from the axial lead of the operating handle.

Due to the implementation of the technical scheme, compared with the prior art, the invention has the following advantages:

the invention has simple structure, convenient operation and obvious effect, can radially prop open the alimentary canal and is beneficial to loosening incarceration foreign matters from the mucous membrane layer.

Drawings

FIG. 1 is a schematic structural view of an embodiment of the digestive tract dilator in an inoperative state (i.e., the stent is collapsed in the sheath);

FIG. 2 is a schematic view of the digestive tract dilator in an operating state (i.e., with the stent open) according to an embodiment;

FIG. 3 is a partial cross-sectional view of the operating handle;

FIG. 4 is a partial exploded view of the operating handle;

FIG. 5 is a perspective view of the slider;

FIG. 6 is a perspective view of the knob;

FIG. 7 is a partial cross-sectional view of the stent in a collapsed state;

FIG. 8 is a partial cross-sectional view of the stand in an open state;

wherein, 1, operating handle; 2. a sheath tube; 3. a support; 4. pushing the pipe; 5. a traction cable; 6. a guide; 11. a housing; 12. a manipulation button; 13. a slider; 14. a third elastic member; 15. a knob; 16. a chute; 17. a first elastic member; 18. a limiting block; 19. a second elastic member; 121. a push button; 122. a boss; 123. a platform; 124. a first tooth; 125. a second tooth; 126. a first top block; 127. a second top block; 128. an avoidance groove; 131. a slider body; 132. a wing portion; 133. a first mounting hole; 134. and a second mounting hole.

Detailed Description

The following examples are intended to illustrate several embodiments of the present invention, but are not intended to limit the invention to these embodiments. It will be appreciated by those skilled in the art that the present invention encompasses all alternatives, modifications and equivalents as may be included within the scope of the claims.

Structures and the like not described in detail in the present invention are conventional technical means in the art.

As shown in figures 1 and 2, the digestive tract dilator is composed of anoperating handle 1, asheath tube 2, abracket 3, apush tube 4, atraction cable 5 and other parts.

As shown in fig. 3 and 4, theoperating handle 1 is composed of ahousing 11, amanipulation knob 12, aslider 13, aknob 15, and the like.

As shown in fig. 5, theslider 13 includes aslider body 131,wings 132 formed on the front and rear sides of theslider body 131 and extending outward, a first mountinghole 133 formed on theslider body 131 for mounting the pushingtube 4, and asecond mounting hole 134 formed on the upper surface of theslider body 131 for mounting the thirdelastic member 14, wherein the first mountinghole 133 is a through hole penetrating through the left and right ends (i.e., the proximal end and the distal end) of theslider body 131, and the second mountingholes 134 are preferably two, so that themanipulation knob 12 can be better supported. The terms "front, rear, left, right, and the like" used herein are defined in the orientation of fig. 5.

As shown in fig. 3, theoperating handle 1 further includes a slidingslot 16 formed on thehousing 11 and capable of cooperating with thewing 132, so as to ensure that the slidingblock 13 can move smoothly in the slidingslot 16 without being locked. The extending direction of the slidinggroove 16 is consistent with the axial direction of theoperating handle 1, thepush pipe 4 and thetraction cable 5 penetrate through the first mountinghole 133, and thepush pipe 4 can be fixed on the slidingblock 13 in a bonding or screw fixing mode, so that the slidingblock 13 can drive thepush pipe 4 to move towards the far end or the near end when sliding in the slidinggroove 16.

As shown in fig. 6, themanipulation knob 12 includes apush knob 121 for being placed and pushed by a finger of the operator, and aboss 122 fixedly connected to an inner surface of thepush knob 121, wherein a plane formed between the inner surface of thepush knob 121 and theboss 122 is capable of being engaged with and sliding on an outer surface of the mounting groove of thehousing 11. Themanipulation knob 12 further includes aplatform 123 fixedly coupled to the other side of theboss 122, afirst tooth 124 is formed on an outer surface of theplatform 123, asecond tooth 125 is formed on an inner surface of the mounting groove of thehousing 11, thefirst tooth 124 and thesecond tooth 125 constitute a locking member capable of being engaged and locked with each other, and when thefirst tooth 124 and thesecond tooth 125 are engaged, the locking member is in a locking state; when the first andsecond teeth 124, 125 are disengaged, the locking assembly is in an unlocked state. Theoperating button 12 further includes a firsttop block 126 fixedly connected to a distal end of an inner side surface of theplatform 123, and a secondtop block 127 fixedly connected to a proximal end of an inner side surface of theplatform 123, and theslider 13 is clamped between the firsttop block 126 and the secondtop block 127 so that theslider 13 can slide along with the axial sliding of theoperating button 12 along thehousing 11. The firsttop block 126 and the secondtop block 127 are respectively formed with a long strip-shaped avoidinggroove 128 at corresponding positions.

As shown in fig. 4, two thirdelastic members 14 for enabling themanipulation knob 12 to move toward the state of being locked with thehousing 11 are disposed between theplatform 123 of themanipulation knob 12 and theslider 13, and the length direction of theescape groove 128 coincides with the direction of sliding unlocking of themanipulation knob 12 and the direction of the elastic force of the thirdelastic member 14, so that themanipulation knob 12 can slide along the radial direction of thehousing 11 relative to theslider 13 without interfering with theslider 13 when themanipulation knob 12 is switched between the locked state and the unlocked state. Under the elastic force of the thirdelastic member 14, theoperation knob 12 is naturally pushed outwards against thehousing 11, thefirst tooth 124 and thesecond tooth 125 are engaged, and the locking assembly is in the locking state, and theoperation knob 12 cannot slide along the axial direction of thehousing 11; when the operator presses theoperation knob 12, theoperation knob 12 slides inward relative to thehousing 11 until thefirst tooth 124 and thesecond tooth 125 disengage, and the inner surface of thepush knob 121 is matched with the outer surface of the mounting groove on thehousing 11, at this time, the locking assembly is in an unlocked state, and due to the existence of the avoidinggroove 128, the radial sliding of theoperation knob 12 does not cause the movement of theslider 13, and further, when the operator pushes thepush knob 121 along the axial direction, theslider 13 is driven to slide along the axial direction of thehousing 11 under the action of thefirst ejector block 126 and thesecond ejector block 127, so that thepush tube 4 and thetraction cable 5 move towards the far end or the near end, and thestent 3 is switched between the open state and the closed state.

As shown in fig. 1 and 2, the digestive tract dilator includes an ovoid orconical guide 6 fixedly disposed at the distal end of thepull cable 5 to reduce injury to the mucosa and other tissues during movement of the instrument within the tract. The far end of thesupport 3 is fixedly connected with theguider 6 or thetraction cable 5, the near end is fixedly connected with the far end of thepush tube 4, thesupport 3 has an opening state and a folding state, the support is shaped into a cage shape when being unfolded during production and is suitable for different alimentary canal sizes, the diameter of thesupport 3 in the unfolding state can have various sizes, and thesupport 3 is made of memory alloy such as nickel titanium and the like, metal with superelasticity, nonmetal and the like which can realize self expansion.

The pushingpipe 4 is slidably sleeved on thetraction cable 5, and thetraction cable 5 can be made of stainless steel and the like. The pushingtube 4 includes, but is not limited to, hollow tubes with a length direction rigidity far greater than a vertical axial rigidity, such as a hypotube, a snake bone tube, a gooseneck tube, a spiral tube, a metal mesh reinforced PTFE tube, and the like, and the pushing tube can be made of stainless steel or other flexible metals or non-metals, and can provide reliable pushing force in the axial direction and ensure flexibility in the radial direction at the same time, so as to meet the requirement of forward and backward movement of an instrument in a complete digestive tract.

Thesheath tube 2 is slidably sleeved on the pushingtube 4, and the near end of thesheath tube 2 is fixedly connected with theshell 11 of theoperating handle 1.

As shown in fig. 3, the pushingtube 4 and the pullingcable 5 pass through the avoidinggroove 128 and the first mountinghole 133, the firstelastic member 17 is sleeved on the pushingtube 4, and two ends of the first elastic member respectively abut against the proximal end of thesecond ejector block 127 and thehousing 11. Thetraction cable 5 further extends out of the pushingtube 4, theoperating handle 1 further comprises aknob 15 rotatably connected with theshell 11 through threads, a limitingblock 18 rotatably connected with theknob 15 and capable of moving along the axial direction of theshell 11 along with the rotation of theknob 15, and a secondelastic member 19 with two ends respectively connected with the limitingblock 18 and thetraction cable 5, when the operatingknob 12 is operated to release thesupport 3 and the fine adjustment is still needed, theknob 15 can be rotated to apply pulling force to thetraction cable 5, so that the supporting force and the supporting radius of thesupport 3 can be finely adjusted.

When the digestive tract dilator is in a non-working state, thebracket 3 is restrained in thesheath 2 and keeps a furled state, and thefirst tooth 124 and thesecond tooth 125 are engaged and locked. During the use, the art person can probe into patient alimentary canal foreign matter department distal end withsheath pipe 2 under the help of laryngoscope, then the art person pressesmanipulation button 12 and makesfirst tooth 124 andsecond tooth 125 break away from mutually, then the art person further promotes to the distal end and pushes awaybutton 121,manipulation button 12drives slider 13 and slides to the distal end, and then drive propellingtube 4 and slide to the distal end, makesupport 3 stretch out fromsheath pipe 2,support 3 is from expanding to the open mode, realize the support to the alimentary canal, becausesupport 3 has the hole under the open mode, thereby can guarantee that the interior air passage of alimentary canal is unblocked, and can not influence the art person and observe alimentary canal distal end mucosa state. After the picking-up is completed, the operator drives the slidingblock 13 to slide towards the near end by dialing back thecontrol button 12, and then drives the pushingtube 4 to slide towards the near end, so that thesupport 3 is retracted into thesheath tube 2 again, and the whole set of instruments can be easily taken out from the alimentary canal.

The present invention includes but is not limited to the above embodiments, and those skilled in the art can convert more embodiments within the claims of the present invention.

Claims (10)

1. An alimentary canal spreader, comprising: including pull cable (5), distal end with the distal end of pull cable (5) fixed set up mutually have an open mode and a furled state support (3), slip cover establish pull cable (5) on and the distal end with the near-end looks fixed connection's of support (3) propelling movement pipe (4), slip cover establish propelling movement pipe (4) on sheath pipe (2), with the near-end looks fixed connection's of sheath pipe (2 operating handle (1), operating handle (1) include with sheath pipe (2) looks fixed connection casing (11), with casing (11) looks fixed connection's slider (13), with slider (13) be connected and can drive slider (13) gliding manipulation button (12), propelling movement pipe (4) with slider (13) looks fixed connection.

2. The alimentary canal distractor of claim 1 wherein: the pushing pipe (4) penetrates through the sliding block (13), the operating handle (1) is sleeved on the pushing pipe (4), and two ends of the pushing pipe are respectively abutted to the sliding block (13) or the near end of the operating button (12) and the first elastic piece (17) on the shell (11).

3. The alimentary canal distractor of claim 1 wherein: the traction rope (5) penetrates through the sliding block (13), the operating handle (1) further comprises a knob (15) rotatably connected with the shell (11), a limiting block (18) rotatably connected with the knob (15) and capable of moving along the axial direction of the shell (11) along with the rotation of the knob (15), and a second elastic piece (19) of which two end parts are respectively connected with the limiting block (18) and the traction rope (5).

4. The alimentary canal distractor of claim 3 wherein: the knob (15) is connected with the shell (11) in a rotating mode through threads.

5. The alimentary canal distractor of claim 1 wherein: the control button (12) comprises a push button (121) which can be connected with the shell (11) in a sliding manner along the axial direction of the shell (11), a first ejector block (126) which is positioned at the far end of the push button (121), a second ejector block (127) which is positioned at the near end of the push button (121), and an avoidance groove (128) which is formed on the first ejector block (126) and the second ejector block (127) and used for avoiding the push pipe (4), wherein the sliding block (13) is clamped between the first ejector block (126) and the second ejector block (127).

6. The alimentary canal distractor of claim 5 wherein: the operating handle (1) further comprises a locking assembly which is arranged between the operating button (12) and the shell (11) and can lock the relative positions of the operating button (12) and the shell (11), and a third elastic piece (14) which enables the operating button (12) to move towards a state of being locked with the shell (11).

7. The alimentary canal distractor of claim 6 wherein: the control button (12) further comprises a platform (123) with an inner side surface fixedly connected with the first ejector block (126) and the second ejector block (127) respectively, and a boss (122) fixedly connected with the outer side surface of the platform (123) and extending along the radial direction of the shell (11), wherein the boss (122) is fixedly connected with the push button (121); the locking assembly comprises a first tooth (124) formed on the outer side surface of the platform (123), and a second tooth (125) formed on the inner surface of the shell (11) and capable of meshing with the first tooth (124); the third elastic element (14) is arranged between the platform (123) and the sliding block (13).

8. The alimentary canal distractor of claim 6 wherein: the avoiding groove (128) is long-strip-shaped, and the length direction of the avoiding groove (128) is consistent with the elastic force direction of the third elastic piece (14).

9. The alimentary canal distractor of claim 6 wherein: the slider (13) comprises a slider body (131), a wing part (132) which is formed on the slider body (131) and extends outwards, a first mounting hole (133) which is formed on the slider body (131) and used for mounting the pushing pipe (4), a second mounting hole (134) which is formed on the slider body (131) and used for mounting the third elastic part (14), and the operating handle (1) further comprises a sliding groove (16) which is formed on the shell (11) and can be matched with the wing part (132).

10. The alimentary canal distractor of claim 1 wherein: the digestive tract dilator also comprises an oval or conical guider (6) fixedly arranged at the far end of the traction cable (5).

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