Esophageal closure device

Abstract

The present application relates to the technical field of medical devices, and discloses an esophageal closure device, which comprises an upper extension head, a lower extension head, a sleeve, a pull rope, a fistula seat and a pull rope adjusting unit, the sleeve is installed between the lower extension head and the pull rope adjusting unit, the pull rope adjusting unit comprises a base, a knob and a take-up post, the base is connected with the fistula seat, the knob is arranged on the base, the take-up post is arranged in the knob, the upper end of the sleeve is connected with the base, and the lower end of the sleeve is connected with the lower extension head, the pull rope passes through the sleeve, the upper end of the pull rope is fixedly connected with the take-up post, and the lower end of the pull rope is fixedly connected with the upper extension head, upper and lower opposing bevels are arranged on the upper extension head and the lower extension head respectively, and the upper opposing bevel and the lower opposing bevel are matched when the upper extension head and the lower extension head are joined. The present application accelerates the growth of the blind end of the esophagus with esophageal atresia, and simultaneously increases the cross-sectional area and the circumference of the esophageal junction.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to an esophageal closure device. BACKGROUND

[0002] Atresia of oesophagus and tracheoesophageal fistula are not uncommon in the neonatal period, according to domestic statistics, the incidence is 1 case in 2000-4500 newborns, similar to the incidence abroad (1 case in 2500-3000 newborns), accounting for the third place of digestive tract malformations, second only to anorectal malformations and Hirschsprung disease, the incidence of boys is slightly higher than that of girls. In the past, children with this disease mostly died within a few days after birth, in recent years, due to the development of pediatric surgery, the success rate of surgical treatment has been gradually improved.

[0003] In the case of esophageal atresia, the upper and lower segments of the esophagus are not connected and each forms a blind end. For such cases, the upper and lower segments are usually stretched and sutured for treatment, but in such cases, the distance between the upper and lower segments is too long to be directly pulled together for surgery, such as type I esophageal atresia, type II esophageal atresia, and type III (A) esophageal atresia. In this case, the esophagus can be reconstructed by small intestine or colon transplantation or by lifting the stomach into the chest to anastomose the esophagus-gastric connection, but the surgery is complex, traumatic, and has many complications. Another method is to wait for the esophageal blind end to grow to an appropriate length for esophageal anastomosis, but the esophageal blind end usually needs 4-8 weeks to grow to a length that can be anastomosed, not only a long process, but also during the growth period, there may be serious complications such as severe pneumonia and internal environment disorder that endanger life.

[0004] In view of the above problems, it is necessary to develop a device that can accelerate the growth of the blind end of congenital esophageal atresia, accelerate the growth of the esophagus in a relatively shorter period of time, and perform surgery as soon as possible to save lives. SUMMARY

[0005] The purpose of the present application is to solve the above problems and provide an esophageal closure device that accelerates the growth of the blind end of esophageal atresia and increases the cross-sectional area and circumference of the esophageal apposition.

[0006] The technical scheme adopted by the present application is:

[0007] An esophageal closure device characterized by comprising an upper extension head, a lower extension head, a sleeve, a pull rope, a stoma seat, and a pull rope adjusting unit, the sleeve being installed between the lower extension head and the pull rope adjusting unit, the pull rope adjusting unit comprising a base, a knob, and a take-up post, the base being connected to the stoma seat, the knob being arranged on the base, the take-up post being arranged in the knob, the upper end of the sleeve being connected to the base, the lower end of the sleeve being connected to the lower extension head, the pull rope passing through the sleeve, the upper end of the pull rope being fixedly connected to the take-up post, the lower end of the pull rope being fixedly connected to the upper extension head, the upper extension head and the lower extension head being respectively provided with upper and lower abutment inclined surfaces, and the upper and lower abutment inclined surfaces being matched when the upper extension head and the lower extension head are engaged.

[0008] Further, the lower end of the upper extension head is provided with a guide head, the upper end of the lower extension head is provided with an abutment groove, and the guide head is matched in the abutment groove when the upper extension head and the lower extension head are engaged, so that the upper and lower abutment inclined surfaces are matched.

[0009] Further, the included angle between the inclined surfaces of the upper and lower abutment inclined surfaces and the vertical section of the lower extension head and the lower extension head is 30° to 60°.

[0010] Further, the upper extension head is provided with a through hole in the middle, the inner diameter of the through hole is greater than the diameter of the pull rope, and the upper end of the through hole is a tapered hole with a large upper end and a small lower end.

[0011] Further, the upper end of the pull rope is provided with an 8-shaped joint clamp or a wire locker.

[0012] Further, the bottom of the base is a stoma cover, the upper part is a take-up cavity, an outer via hole is arranged between the stoma cover and the take-up cavity, a guide groove is arranged on the upper end of the take-up cavity, a threaded hole is arranged on the upper end of the knob, a guide block is arranged on the inner side of the lower end of the knob, the guide block is matched with the guide groove, and an outer thread is arranged on the take-up post and matched with the threaded hole of the knob.

[0013] Further, the outer side of the knob is provided with two symmetrical unlocking knobs, the inner side of the knob at the position of the unlocking knob is fixedly provided with lock teeth, a locking ring is arranged on the two lock teeth, an inner ring tooth is arranged on the inner ring of the locking ring, the outer diameter of the locking ring is smaller than the inner diameter of the knob, a clamping block is arranged on the lower end of the locking ring, a clamping groove is arranged in the upper end of the base, and the clamping block is matched in the clamping groove when the locking ring is matched with the lock teeth.

[0014] Further, a plurality of pressing ring blocks are arranged on the inner side of the knob below the lock teeth, so that the locking ring is matched between the pressing ring blocks and the lock teeth.

[0015] Further, an anti-rotation pin is arranged on the lower end of the take-up post, a vertical anti-rotation groove is arranged in the take-up cavity of the base, and the anti-rotation pin is matched in the anti-rotation groove, so that the take-up post is limited to move in the vertical direction.

[0016] Further, a scale is arranged on the outer circumference of the take-up post.

[0017] Further, a through hole is arranged on the take-up post, and a string shaft is arranged above the through hole, and the pull rope is arranged on the string shaft through the through hole.

[0018] Further, a transparent cover is arranged above the knob, and the string shaft and the take-up post are located in the transparent cover.

[0019] The beneficial effects of the present application are:

[0020] (1) The sleeve wire is used for pulling, and the pulling distance is micro-controlled, and the locking function is provided, so that the adjustment amount is accurately controllable each time;

[0021] (2) The non-vertical cross section method is used, so that the shape of the long joint inner diameter is changed, the circumference and the area are expanded, the shrinkage phenomenon after the long joint is reduced, and the influence on the flowability (flow rate and food diameter) after the long joint is reduced.

[0022] (3) The device structure is ingenious, and the operation is simple. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic diagram of the exploded structure of the present application;

[0024] Figure 2 It is a use effect diagram when the present application is applied to promote the growth of the blind end of the esophagus of a child;

[0025] Figure 3 It is a schematic diagram of the partial cross-sectional structure of the upper extension head in the present application;

[0026] Figure 4 It is a schematic diagram of the partial cross-sectional structure of the lower extension head in the present application;

[0027] Figure 5 It is a schematic diagram of the structure of the sleeve and the pull rope in the present application;

[0028] Figure 6 It is a schematic diagram of the partial cross-sectional structure of the base in the present application;

[0029] Figure 7 It is a schematic diagram of the structure of the locking ring in the present application;

[0030] Figure 8 It is a schematic diagram of the partial cross-sectional structure of the knob in the present application;

[0031] Figure 9 It is a schematic diagram of the partial cross-sectional structure of the take-up post in the present application;

[0032] Figure 10Fig. 1 is a schematic diagram of the half-section structure of the upper extension head and the lower extension head of the present application after the upper extension head and the lower extension head are closed;

[0033] Figure 11 Fig. 4 is a schematic diagram of the half-section structure of the locking ring, the knob and the take-up post mounted on the base of the present application;

[0034] Figure 12 Fig. 5 is a schematic diagram of another embodiment of the lower extension head of the present application;

[0035] Figure 13 Fig. 6 is a schematic diagram of another embodiment of the external end of the pull rope of the present application;

[0036] Figure 14 Fig. 7 is a schematic diagram of the transparent cover of the present application;

[0037] Figure 15 Fig. 8 is a schematic diagram of the change of the oblique cross section compared with the traditional vertical cross section of the present application.

[0038] The reference numbers in the drawings are as follows:

[0039] 1 is the upper extension head, 101 is the upper guide head, 102 is the upper closing bevel, and 103 is the inner sink hole;

[0040] 2 is the pull rope, 201 is the internal end, and 202 is the external end;

[0041] 3 is the lower extension head, 301 is the inner rope passing hole, 302 is the inner tube seat, 303 is the lower extension head, 304 is the closing groove, 305 is the closing bevel, 3051 is the cutting blade, and 306 is the guide rod;

[0042] 4 is the sleeve, and 401 is the tube head;

[0043] 5 is the fistula forming seat;

[0044] 6 is the fistula cover, 601 is the rubber ring, 602 is the external passing hole, 603 is the external tube seat, 604 is the fistula cover, 605 is the take-up cavity, 606 is the guide groove, 607 is the clamping groove, and 608 is the anti-rotation groove;

[0045] 7 is the locking ring, 701 is the clamping block, 702 is the outer ring surface, and 703 is the inner ring tooth;

[0046] 8 is the knob, 801 is the guide block, 802 is the pressing ring block, 803 is the unlocking knob, 8031 is the locking tooth, 804 is the outer knob surface, and 805 is the screw hole;

[0047] 9 is the take-up post, 901 is the scale, 902 is the anti-rotation pin, 903 is the screw thread, and 904 is the outer sink hole;

[0048] 10 is the string shaft;

[0049] 11 is the transparent cover;

[0050] A1 represents the child's skin, A2 represents the lower blind end of the stomach and esophagus, and A3 represents the upper blind end of the esophagus. Detailed Implementation

[0051] The specific embodiments of the esophageal closure device of the present invention will be described in detail below with reference to the accompanying drawings.

[0052] See Figure 1 , Figure 2 The esophageal closure device includes an upper extension head 1, a lower extension head 3, a sleeve 4, a pull rope 2, a stoma seat 5, a base 6, a locking ring 7, a knob 8, and a take-up post 9.

[0053] The upper extension head 1 and the lower extension head 3 are located inside the child's body. The upper extension head 1 is installed in the upper blind end A3 of the esophagus, and the lower extension head 3 is installed in the stomach and the lower blind end A2 of the esophagus. The base 6, locking ring 7, knob 8, and take-up post 9 are located outside the child's body. The locking ring 7 and the knob 8 are both installed on the base 6. The knob 8 can only rotate on the base 6. The take-up post 9 is installed in the knob 8 by a threaded connection.

[0054] The stoma seat 5 is installed at the gastrostomy opening in the child's stomach, and the base 6 covers the stoma seat 5 and contacts the child's skin A1. One end of the cannula 4 is fixedly connected to the lower extension head 3 inside the child's body, and the other end is fixedly connected to the base 6 outside the body through the stoma seat 5 installed on the gastrostomy opening. The pull rope 2 passes through the middle of the cannula 4, with one end fixedly connected to the upper extension head 1 inside the child's body and the other end fixedly connected to the take-up post 9 outside the child's body. Thus, by rotating the knob 8, the take-up post 9 can be driven, thereby pulling the pull rope 2 and tightening the distance between the extension head 1 and the lower extension head 3, thereby promoting the growth of the upper and lower blind ends of the esophagus.

[0055] See Figure 3 , Figure 4 See also Figure 1 , Figure 2 The upper extension head 1 is provided with an upper guide head 101, an upper mating inclined surface 102 and an inner countersunk hole 103. The upper mating inclined surface 102 is not a vertical cut surface of the upper extension head 1, but has a certain angle with the vertical cut surface. The inner countersunk hole 103 is a through hole with a larger upper end and a smaller lower end, and the shape of the hole is circular or square.

[0056] The lower extension head 3 is provided with a lower extension head 303 and a mating inclined side 305. The lower extension head 303 is provided with a mating groove 304 that matches the upper guide head 101. The lower extension head 3 is provided with an inner rope hole 301 at the center of symmetry and an inner tube seat 302 at the lower end. The mating inclined side 305 is not on the vertical sectional surface of the lower extension head 3, but has a certain angle with the vertical sectional surface, and the angle is the same as that of the upper mating inclined surface 102.

[0057] When the upper extension head 1 and the lower extension head 3 are closed, the upper closing bevel 102 and the closing bevel edge 305 press the esophageal tissue, so as to promote the upper and lower esophageal blind ends to grow together.

[0058] Referring to Figure 5 、 Figure 10 、 Figure 11 , see Figure 1 、 Figure 2 , the two ends of the pull rope 2 are respectively provided with an in-vivo end 201 and an extra-corporeal end 202, the in-vivo end 201 is connected to the fistula seat 5, the lower extension head 3 and the upper extension head 1 in sequence, and the extra-corporeal end of the pull rope 2 is connected to the take-up post 9; the extra-corporeal end 202 of the pull rope 2 can be an 8-shaped joint clamp or a wire locker, so as to adjust and cut the length of the pull rope 2 during surgical implantation.

[0059] Referring to Figure 6 、 Figure 11 , see Figure 1 、 Figure 2 , the base 6 is sleeved on the fistula seat 5, the bottom of the base 6 is provided with a rubber ring 601, the upper surface of the rubber ring 601 is a stoma cover 604, the upper end of the stoma cover 604 is provided with a take-up cavity 605, the bottom end of the take-up cavity 605 is provided with an outer through hole 602 and an outer tube seat 603, the upper part of the take-up cavity 605 is provided with a guide groove 606, the top of the take-up cavity 605 is provided with a clamping groove 607, and the outer surface of the upper end of the take-up cavity 605 is processed with an anti-rotation groove 608.

[0060] Referring to Figure 7 、 Figure 11 , see Figure 1 、 Figure 2 , the locking ring 7 is fixed on the base 6, the lower end of the locking ring 7 is provided with a clamping block 701, the inner part is provided with inner ring teeth 703, and the outer diameter of the outer ring surface 702 is slightly smaller than the outer diameter of the take-up cavity 605.

[0061] Referring to Figure 8 、 Figure 11 , see Figure 1 、 Figure 2 , the knob 8 is rotatably connected with the base 6, the inner part of the lower section of the knob 8 is provided with a guide block 801, the guide block 801 is matched with the guide groove 606 of the base 6, so that the knob 8 can only rotate around the take-up cavity 605 and cannot axially move, the inner surface of the knob 8 is slightly higher than the position of the locking ring 7 and is provided with a plurality of ring pressing blocks 802, the ring pressing blocks 802 limit the locking ring 7 at the upper end of the base 6, and the upper section of the knob 8 is internally provided with a screw hole 805.

[0062] The middle part of the knob 8 is also connected with two left-right symmetrical unlocking knobs 803, the inner part of the unlocking knob 803 is fixed with a lock tooth 8031, the lock tooth 8031 is locked in engagement with the inner ring tooth 703 of the ring 7, the unlocking knob 803 is flexibly connected with the knob 8, a certain external force can make the unlocking knob 803 bend inward so that the lock tooth 8031 is separated from the inner ring tooth 703, so that the outer knob surface 804 of the knob 8 can be rotated, and then the up-down position of the take-up post 9 is adjusted; further, the take-up post 9 drives the pull rope 2 to adjust the distance between the upper extension head 1 and the lower extension head 3, so as to control the growth length or growth speed of the esophageal blind end of the child (every day or every time).

[0063] Referring to Figure 9 , Figure 11 , in combination with Figure 1 , Figure 2 , the take-up post 9 is installed in the screw hole 805 of the knob 8 through threaded connection; the outer surface of the take-up post 9 is provided with a scale 901, the lower end of the take-up post 9 is provided with an anti-rotation pin 902 matched with the anti-rotation groove 608 on the base 6, so that the take-up post 9 can only move along the axial direction of the base 6; the outer surface of the take-up post 9 is also provided with a screw thread 903 matched with the screw hole 805 of the knob 8, when the knob 8 is rotated, the take-up post 9 can be driven to move up and down along the axis; the inner part of the take-up post 9 is provided with an outer counterbore 904, the body outer end 202 of the pull rope 2 is installed in the outer counterbore 904, the pull rope 2 passes through the outer counterbore 904 downward and finally connects with the upper extension head 1 through the outer through hole 602 of the base 6.

[0064] In addition, referring to Figure 12 , the lower extension head 3 also includes a cutting blade 3051, the cutting blade 3051 protrudes upward, so that the cutting blade 3051 is in contact with the upper matching inclined surface 102 of the upper extension head 1, thereby cutting the esophageal tissue and playing a cutting role after the necrotic tissue.

[0065] The lower extension head 3 also includes a guide rod 306, the guide rod 306 is square-shaped and matched with the square-shaped inner counterbore 103 of the upper extension head 1, so as to better ensure the up-down matching of the upper extension head 1 and the lower extension head 3.

[0066] In addition, referring to Figure 13 , it also includes a string shaft 10, the take-up post 9 is matched with a string shaft hole matched with the string shaft 10, the string shaft 10 is installed in the string shaft hole, and the string shaft 10 is used for adjusting the tension of the pull rope in the initial stage.

[0067] In addition, referring to Figure 14 , it also includes a transparent cover 11, the transparent cover 11 is installed on the knob 8 to protect the string shaft 10 and the take-up post 9.

[0068] Referring to Figure 15Compared with the traditional vertical cross section, the circular cavity formed by the present application has an internal radius of R-△R, a cross-sectional area of π(R-△R)^2, and a circumference of 2π(R-△R).

[0069] In the present application, since the oblique cutting cross section is an ellipse, the short axis radius of the elliptical cavity formed inside is still R-△R, but the long axis is (R-△R) / cos(α), so the cross-sectional area is π(R-△R)^2 / cos(α), and the circumference is 2π(R-△R)+4[(R-△R) / cos(α)-(R-△R)], when α=60°, the area will increase by 100%, and the circumference will increase by about 64%.

[0070] If the radius after suturing is reduced to 90% of the original, that is, △R=0.1R, then an angle of about 36° is needed to solve the problem of narrow inner diameter, so within an angle of 30° to 60°, a relatively long joint surface can be formed to ensure the effect after suturing.

[0071] The present application uses a sleeve wire method for pulling and micro-controls the pulling distance, and has a locking function, ensuring that the adjustment amount is accurately controllable each time and can be seen; more importantly, the present application uses a non-vertical cross section method, which changes the shape of the long joint inner diameter, expands the circumference and area, thereby reducing the shrinkage phenomenon after long joint, and reducing the influence on the flowability (flow rate, food diameter) of eating after long joint.

[0072] The above is only a preferred embodiment of the present application, and it should be noted that for ordinary skilled persons in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered within the scope of protection of the present application.

Claims

1. An esophageal closure device, characterized by: The application relates to a stoma device, which comprises an upper extension head, a lower extension head, a sleeve, a pull rope, a stoma seat and a pull rope adjusting unit, wherein the sleeve is arranged between the lower extension head and the pull rope adjusting unit, the pull rope adjusting unit comprises a base, a knob and a winding column, the base is connected with the stoma seat, the knob is arranged on the base, the winding column is arranged in the knob, the upper end of the sleeve is connected with the base, the lower end of the sleeve is connected with the lower extension head, the pull rope passes through the sleeve, the upper end of the pull rope is fixedly connected with the winding column, the lower end of the pull rope is fixedly connected with the upper extension head, the upper extension head is arranged in the upper blind end of the esophagus, and the lower extension head is arranged in the lower blind end of the stomach and the esophagus; the upper extension head and the lower extension head are respectively provided with upper and lower matching inclined surfaces, the included angle between the inclined surfaces of the upper and lower matching inclined surfaces and the vertical section of the upper and lower extension heads is 30-60 degrees, the lower end of the upper extension head is provided with a guide head, the upper end of the lower extension head is provided with a matching groove, when the upper extension head and the lower extension head are connected, the guide head is matched in the matching groove, the upper and lower matching inclined surfaces are matched, the bottom of the base is a stoma cover, the upper part of the base is a winding cavity, an outer via hole is arranged between the stoma cover and the winding cavity, a guide groove is arranged on the upper end of the winding cavity, a threaded hole is arranged on the upper end of the knob, a guide block is arranged on the inner side of the lower end of the knob, the guide block is matched with the guide groove, an outer thread is arranged on the winding column, the outer thread is matched with the threaded hole on the knob, an anti-rotation nail is arranged on the outer side of the lower end of the winding column, a vertical anti-rotation groove is arranged in the winding cavity of the base, the anti-rotation nail is matched in the anti-rotation groove, the movement of the winding column is limited in the vertical direction, a through hole is arranged on the winding column, a string shaft is arranged above the through hole, and the pull rope is arranged on the string shaft.

2. An esophageal closure device according to claim 1, characterized in that: The upper extension head is provided with a through hole, and the diameter of the through hole is larger than the diameter of the pull rope.

3. The esophageal closure device of claim 1, wherein: The upper end of the pull rope is provided with a 8-shaped joint clamp or a wire locking device.

4. The esophageal closure device of claim 1, wherein: The outer side of the knob is provided with two symmetrical unlocking knobs, the inner side of the knob is fixedly provided with locking teeth at the position of the unlocking knobs, a locking ring is arranged on the two locking teeth, an inner ring tooth is arranged on the inner ring of the locking ring, the outer diameter of the locking ring is smaller than the inner diameter of the knob, a clamping block is arranged on the lower end of the locking ring, a clamping groove is arranged in the upper end of the base, and the clamping block is matched in the clamping groove when the locking ring is matched with the locking teeth.

5. An esophageal closure device as in claim 4, wherein: A plurality of pressing ring blocks are arranged on the inner side of the knob below the locking teeth, so that the locking ring is matched between the pressing ring blocks and the locking teeth.

6. The esophageal closure device of claim 4, wherein: A scale is arranged on the outer circumference of the winding column.

7. The esophageal closure device of claim 1, wherein: A transparent cover is arranged above the knob, and the string shaft and the winding column are located in the transparent cover.

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