CN220046010U - Puncture auxiliary fixator for oncology department - Google Patents

Abstract

The utility model discloses a puncture auxiliary fixer for oncology, which comprises a fixer main body, wherein a limiting mechanism is arranged in the fixer main body, a movable adjusting mechanism is arranged on the back surface of the fixer main body, an auxiliary puncture mechanism is connected to the movable adjusting mechanism, and a fixing mechanism is arranged on the auxiliary puncture mechanism.

Description

Puncture auxiliary fixator for oncology department

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a puncture auxiliary fixator for oncology.

Background

The puncture generally refers to that a puncture needle is used for puncturing a designated part of a human body to extract a tissue sample, or gas or contrast agent is injected into a body cavity to carry out contrast examination, wherein puncture biopsy is often adopted for detecting focus of the human body by oncology, and the puncture biopsy has the advantages of remarkable advantages, small damage to the tissue, small bleeding amount and small infection probability during puncture, and can be operated by one person.

At present, some pediatric tumor patients need to puncture and sample the limbs of the pediatric tumor patients, and the problems exist in the process of puncture and sampling, namely 1, medical staff easily shake hands in the process of puncture, cannot puncture tumors at one time, and brings certain pain to the patients; 2. during the puncturing process, the patient easily causes limb movement due to pain, so that the puncturing work is difficult to perform.

CN218606781U discloses a puncture locator for oncology, it has effectually solved medical personnel and has fixed a position inaccurately in the puncture process to thereby hand shake easily takes place in the puncture process and leads to puncture can not disposable success, brings too much painful problem for patient, however its locator adopts the mode of centre gripping to fix patient's limbs, leads to patient's limb fixed discomfort easily, and two clamp splice on its fixer are by a worm and turbine control, do not consider patient's limb by the different thickness size in two positions of clamp splice fixed.

Therefore, how to design a puncture auxiliary fixator for oncology is a problem that we need to solve currently.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a puncture auxiliary fixer for oncology department, which solves the problems that medical staff is easy to cause inaccurate puncture due to hand shake during puncture and patients are easy to cause difficult puncture due to limb movement during the puncture process.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a puncture auxiliary fixture for oncology, includes the fixer main part, and the inside of fixer main part is equipped with stop gear, and the back of fixer main part is equipped with movable adjustment mechanism, is connected with auxiliary puncture mechanism on the movable adjustment mechanism, is equipped with fixed establishment on the auxiliary puncture mechanism, and fixer main part bottom is equipped with the base, stop gear includes drive bolt, first gear, second gear, transfer line, gag lever post, solid fixed ring, fly leaf, first cushion, second cushion, crank, inflatable bladder, inflation inlet, fixed sleeve and fourth fixing bolt, and the inside central point that is close to both sides of fixer main part is vertical to be equipped with drive bolt, and drive bolt both sides axisymmetric is equipped with the gag lever post of two vertical directions, and drive bolt both ends junction all is equipped with movable bearing, and drive bolt is close to the surface position of bottom and is equipped with first gear, the fixing ring and the transmission bolt are arranged at the positions, close to two sides, of the top of the main body of the fixer, the fixing ring and the transmission bolt are positioned on the same plane, a first soft cushion is arranged on the inner side of the fixing ring, a movable plate is arranged at the bottom of the fixing ring, a threaded hole is arranged at the center part of the movable plate, through holes are arranged at the positions, on two sides of the threaded hole, of the movable plate, the movable plate is connected to the surface of the transmission bolt through the threaded holes and is connected to the surface of the limiting rod, a fixing sleeve is arranged on one side of the main body of the fixer, a transmission rod is connected in a penetrating manner inside the fixing sleeve, a second gear is connected to the inner end of the transmission rod, the second gear is meshed with the first gear, a crank is connected to the outer end of the transmission rod, a fourth fixing bolt is movably connected to the top of the fixing sleeve, an inflatable bag is embedded at the top of the main body of the fixer, an inflatable port is arranged on the inflatable bag, the inflatable port penetrates out from the front surface of the main body of the fixer, second cushions are arranged on two sides of the top of the fixer body.

Further, the movable adjustment mechanism comprises a limiting chute, a movable block, limiting blocks, telescopic plates, first fixing bolts, u-shaped plates and second fixing bolts, two limiting chutes are formed in the back of the main body of the fixer, the movable block is movably connected in the limiting chute through two limiting blocks which are arranged on the front face of the movable block, the telescopic plates are nested in the back of the movable block, the side faces of the movable block are movably connected with the first fixing bolts, the bottoms of the movable block are connected with the u-shaped plates, and the inner threads of the u-shaped plates are connected with the second fixing bolts.

Further, supplementary piercing depth constructs including fixed block, dead lever, first limiting plate, the spring, the movable sleeve, the swing joint head, the handle, second limiting plate and catch bar, be connected with the fixed block on the outside end of expansion plate, the top of fixed block is connected with the dead lever, the surface swing joint of dead lever has the movable sleeve, the bottom fixedly connected with second limiting plate of movable sleeve, the dead lever is close to the surface of bottom and is equipped with first limiting plate, swing joint has the spring on the dead lever surface between first limiting plate and the second limiting plate, the top of dead lever is connected with the swing joint head, the bottom of swing joint handle on the swing joint head, the one end of central point put swing joint catch bar of handle, the other end swing joint of catch bar is in the back of movable sleeve.

Further, fixed establishment includes horizontal fixed plate, vertical fixed plate, backup pad, fixed lantern ring, third fixing bolt and nut, and the front of movable sleeve is connected with horizontal fixed plate, and the front fixedly connected with vertical fixed plate of horizontal fixed plate, and the inboard of vertical fixed plate is equipped with the backup pad, and the outside of vertical fixed plate is equipped with fixed lantern ring, and through-connection has third fixing bolt on the fixed lantern ring, and third fixing bolt's surface swing joint has the nut, and the nut is in the outside of fixed lantern ring.

Further, the surface of the transmission bolt is provided with threads, and the internal threads of the threaded holes arranged at the center of the movable plate are matched with the threads on the surface of the transmission bolt.

Furthermore, two fixing rings are arranged in total, and the fixing rings are symmetrically distributed by taking the inflatable air bags as axes.

Further, the length of the expansion plate is longer than the radius of the groove at the top of the fixer body.

Further, the length of the limiting chute is greater than the distance between the two fixing rings.

Further, the lengths of the first limiting plate and the second limiting plate are larger than the diameter length of the spring.

Further, the backup pad is equipped with two altogether, and the backup pad uses horizontal fixed plate to constitute triangular structure as axisymmetric distribution and vertical fixed plate jointly, and the fixed lantern ring is equipped with two at least altogether, and at vertical fixed plate lateral surface evenly arranged, each fixed lantern ring inboard all is equipped with the rubber pad.

Compared with the prior art, the utility model has the following beneficial effects:

(1) According to the utility model, the two fixing rings on the limiting mechanism can better limit and fix the limbs of the patient, the internal size of the fixing rings can be adjusted according to the size of the limbs of the patient, the first cushion and the second cushion on the limiting mechanism can ensure that the limbs of the patient are more comfortable when being fixed, the limbs of the patient can be tightly propped by the inflatable air bags on the limiting mechanism, the limbs of the patient can be more firmly fixed by matching with the fixing rings, and the limbs of the patient are not easy to generate discomfort due to the softness of the inflatable air bags.

(2) The utility model can translate the auxiliary puncture mechanism on the x-axis and the y-axis through the movable adjusting mechanism, so that the puncture work can be performed without changing the limb position of a patient.

(3) The auxiliary puncture mechanism can avoid manual puncture by medical staff, improve the stability of the puncture needle in the puncture process, avoid puncture deflection caused by instability of manual puncture by the medical staff, and increase pain of patients.

(4) According to the utility model, the puncture needle can be fixed more firmly through the fixing mechanism, and the opening size of the fixing collar can be adjusted by matching the fixing collar on the fixing mechanism with the third fixing bolt and the nut, so that the puncture needle is suitable for most types of puncture needles.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present utility model.

Fig. 2 is a schematic rear view of the overall structure of the present utility model.

Fig. 3 is a side cross-sectional view of the anchor body of the present utility model.

Fig. 4 is a schematic view of the movable adjusting mechanism of the present utility model.

FIG. 5 is a schematic view of an auxiliary lancing mechanism according to the present utility model.

Fig. 6 is a schematic view of the fixing mechanism of the present utility model.

Fig. 7 is an enlarged view of portion a of fig. 3 in accordance with the present utility model.

Fig. 8 is a schematic structural view of a fixing sleeve according to the present utility model.

In the figure: 1. a holder body; 2. a drive bolt; 3. a first gear; 4. a second gear; 5. a transmission rod; 6. a limit rod; 7. a fixing ring; 8. a movable plate; 9. a first cushion; 10. a second cushion; 11. a base; 12. a crank; 13. an inflatable airbag; 14. an inflation inlet; 15. limiting sliding grooves; 16. a movable block; 17. a fixed block; 18. a fixed rod; 19. a first limiting plate; 20. a spring; 21. a movable sleeve; 22. a transverse fixing plate; 23. a movable connector; 24. a handle; 25. a limiting block; 26. a telescoping plate; 27. a first fixing bolt; 28. a u-shaped plate; 29. a second fixing bolt; 30. a second limiting plate; 31. a push rod; 32. a vertical fixing plate; 33. a support plate; 34. a fixed collar; 35. a third fixing bolt; 36. a screw cap; 37. a fixed sleeve; 38. and a fourth fixing bolt.

Detailed Description

Referring to fig. 1-8, the present utility model provides the following technical solutions: the utility model provides a puncture auxiliary fixator for oncology, including fixer main part 1, fixer main part 1's inside is equipped with stop gear, fixer main part 1's the back is equipped with movable adjustment mechanism, be connected with auxiliary puncture mechanism on the movable adjustment mechanism, be equipped with fixed establishment on the auxiliary puncture mechanism, fixer main part 1 bottom is equipped with base 11, stop gear includes drive bolt 2, first gear 3, second gear 4, transfer line 5, gag lever post 6, solid fixed ring 7, fly leaf 8, first cushion 9, second cushion 10, crank 12, inflatable bag 13, inflation inlet 14, fixed sleeve 37 and fourth fixing bolt 38, the inside central point that is close to both sides of fixer main part 1 is vertical to be equipped with drive bolt 2, drive bolt 2 both sides axisymmetric is equipped with two vertical limit posts 6, drive bolt 2 both ends junction all is equipped with movable bearing, the surface position of the transmission bolt 2 near the bottom is provided with a first gear 3, the position of the top of the fixer body 1 near two sides is provided with a fixed ring 7, the fixed ring 7 and the transmission bolt 2 are positioned on the same plane, the inner side of the fixed ring 7 is provided with a first soft cushion 9, the bottom of the fixed ring 7 is provided with a movable plate 8, the center part of the movable plate 8 is provided with a threaded hole, the two sides of the threaded hole are provided with through holes, the movable plate 8 is connected with the surface of the transmission bolt 2 through the threaded holes and is connected with the surface of the limit rod 6 through the through holes, one side of the fixer body 1 is provided with a fixed sleeve 37, the inside of the fixed sleeve 37 is connected with a transmission rod 5 in a penetrating way, the inner end head of the transmission rod 5 is connected with a second gear 4, the second gear 4 is meshed with the first gear 3, the outer end head of the transmission rod 5 is connected with a crank 12, the top of the fixed sleeve 37 is movably connected with a fourth fixed bolt 38, the inflatable air bags 13 are embedded in the top of the fixer body 1, the inflatable air bags 13 are provided with inflatable openings 14, the inflatable openings 14 penetrate out of the front face of the fixer body 1, and the two sides of the top of the fixer body 1 are provided with the second soft cushions 10.

The movable adjusting mechanism comprises a limiting chute 15, a movable block 16, a limiting block 25, a telescopic plate 26, a first fixing bolt 27, a u-shaped plate 28 and a second fixing bolt 29, wherein the back of the fixer main body 1 is provided with two limiting chutes 15, the movable block 16 is movably connected in the limiting chute 15 through two limiting blocks 25 which are arranged on the front of the movable block, the telescopic plate 26 is nested on the back of the movable block 16, the side face of the movable block 16 is movably connected with the first fixing bolt 27, the bottom of the movable block 16 is connected with the u-shaped plate 28, the inner thread of the u-shaped plate 28 is connected with the second fixing bolt 29, and the auxiliary puncturing mechanism can be translated on the x-axis and the y-axis through the movable adjusting mechanism, so that puncturing work can be performed without changing the limb position of a patient.

The auxiliary puncture mechanism comprises a fixed block 17, a fixed rod 18, a first limiting plate 19, a spring 20, a movable sleeve 21, a movable connector 23, a handle 24, a second limiting plate 30 and a push rod 31, wherein the fixed block 17 is connected to the outer side end of the telescopic plate 26, the fixed rod 18 is connected to the top of the fixed block 17, the movable sleeve 21 is movably connected to the surface of the fixed rod 18, the second limiting plate 30 is fixedly connected to the bottom of the movable sleeve 21, the first limiting plate 19 is arranged on the surface, close to the bottom, of the fixed rod 18, the spring 20 is movably connected to the surface of the fixed rod 18 between the first limiting plate 19 and the second limiting plate 30, the movable connector 23 is connected to the top end of the movable connector 23, the handle 24 is movably connected to one end of the push rod 31, the other end of the push rod 31 is movably connected to the back of the movable sleeve 21, manual puncture is not needed by a medical staff, the stability of the puncture needle in the puncture process is improved, the puncture is prevented from being caused by the manual puncture of the medical staff, and pain of the patient is increased.

Wherein, fixed establishment includes horizontal fixed plate 22, vertical fixed plate 32, backup pad 33, fixed lantern ring 34, third fixing bolt 35 and nut 36, the front of movable sleeve 21 is connected with horizontal fixed plate 22, the front fixedly connected with vertical fixed plate 32 of horizontal fixed plate 22, the inboard of vertical fixed plate 32 is equipped with backup pad 33, the outside of vertical fixed plate 32 is equipped with fixed lantern ring 34, through-connection has third fixing bolt 35 on the fixed lantern ring 34, the surface swing joint of third fixing bolt 35 has nut 36, and nut 36 is in the outside of fixed lantern ring 34, can make the pjncture needle fixed more firm through fixed establishment, and the fixed lantern ring 34 on the fixed establishment cooperates third fixing bolt 35 and nut 36 to use and can adjust the opening size of fixed lantern ring 34, make it be applicable to the pjncture needle of most models.

Wherein, the surface of the transmission bolt 2 is provided with threads, and the internal threads of the threaded holes arranged at the center of the movable plate 8 are matched with the threads on the surface of the transmission bolt 2.

Wherein, the number of the fixing rings 7 is two, and the fixing rings 7 are symmetrically distributed by taking the inflatable air bags 13 as axes.

Wherein the length of the expansion plate 26 is longer than the radius of the groove at the top of the holder body 1.

Wherein the length of the limit chute 15 is greater than the distance between the two fixing rings 7.

Wherein the length of the first limiting plate 19 and the second limiting plate 30 is greater than the diameter length of the spring 20.

Wherein, backup pad 33 is equipped with two altogether, and backup pad 33 uses horizontal fixed plate 22 to constitute triangular structure jointly with vertical fixed plate 32 for axisymmetric distribution, and fixed lantern ring 34 is equipped with two at minimum altogether, and evenly arranges at vertical fixed plate 32 lateral surface, and each fixed lantern ring 34 inboard all is equipped with the rubber pad, can make fixed establishment overall structure more firm through the triangular structure who constitutes, is difficult for the atress off normal when carrying out the puncture work, can guarantee through the rubber pad that the pjncture needle of fixed lantern ring 34 inside can not receive the damage and destroy.

To sum up, the workflow of the utility model: when the patient limb needs to be punctured, the fixer is placed at a stable position through the base 11, then the patient limb needing to be punctured is penetrated through the fixing ring 7 and placed at the top of the fixer main body 1, after the patient limb is completely punctured, the crank 12 at two sides of the fixer main body 1 is rotated to drive the transmission rod 5 to rotate, the transmission rod 5 drives the second gear 4 to rotate, the second gear 4 drives the transmission bolt 2 to rotate through the first gear 3, the transmission bolt 2 drives the movable plate 8 to stably move downwards through the limit of the limit rod 6 through the surface screw thread rotation, the fixing ring 7 downwards moves to limit and fix the patient limb at the top of the fixer main body 1, the crank 12 is rotated to adjust the two fixing rings 7 to be contracted to a position suitable for the patient limb, the transmission rod 5 is fixed through the fourth fixing bolt 38 on the rotary fixing sleeve 37, then the inflatable air bag 13 is inflated through the inflation inlet 14, the inflatable air bag 13 is inflated to be matched with the fixing ring 7 to further limit and fix the limb of the patient, after the limb of the patient is limited, the puncture needle is inserted into the two fixing collars 34, the third fixing bolt 35 and the matched nut 36 are turned to tighten the fixing collars 34, the fixing collars 34 tighten and fix the puncture needle on the inner side of the fixing collars, after the fixing is finished, the movable block 16 is pushed, the movable block 16 translates in the x-axis direction in the limiting chute 15 through the limiting block 25, the fixing block 17 is pulled, the fixing block 17 slides outwards through the expansion plate 26 to translate in the y-axis direction, the x-axis direction and the y-axis direction of the fixing rod 18 are adjusted, the puncture needle fixed on the fixing collars 34 is translated to the position above the part of the limb of the patient, which is required to puncture, and then the puncture needle is stopped, the first fixing bolt 27 and the second fixing bolt 29 are rotated to fix the movable sleeve, the handle 24 is grasped by hands to press downwards after fixing is finished, the push rod 31 presses downwards to drive the movable sleeve 21, the movable sleeve 21 moves downwards on the surface of the fixed rod 18 to drive the transverse fixing plate 22 to move downwards, the transverse fixing plate 22 drives the puncture fixed inside the fixing sleeve ring 34 connected to the vertical fixing plate 32 to puncture the part of the limb of the patient, and the second limiting plate 30 is used for pushing the spring 20 on the surface of the fixed rod 18 by moving downwards when the movable sleeve 21 moves downwards, so that the spring 20 deforms to generate a reaction force, and the reaction force generated by the spring 20 can push the second limiting plate 30 to drive the movable sleeve 21 to reset when the movable sleeve 21 is not pressed downwards.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. Puncture auxiliary fixator for oncology department, comprising a fixator body (1), characterized in that: the inside of the fixer body (1) is provided with a limiting mechanism, the back of the fixer body (1) is provided with a movable adjusting mechanism, the movable adjusting mechanism is connected with an auxiliary puncturing mechanism, the auxiliary puncturing mechanism is provided with a fixing mechanism, the bottom of the fixer body (1) is provided with a base (11), the limiting mechanism comprises a transmission bolt (2), a first gear (3), a second gear (4), a transmission rod (5), a limiting rod (6), a fixed ring (7), a movable plate (8), a first soft cushion (9), a second soft cushion (10), a crank (12), an inflatable airbag (13), an inflation inlet (14), a fixed sleeve (37) and a fourth fixed bolt (38), the center position of the inside of the fixer body (1) close to two sides is vertically provided with a transmission bolt (2), the two sides of the transmission bolt (2) are axially symmetrically provided with limiting rods (6) in two vertical directions, the joints of two ends of the transmission bolt (2) are respectively provided with a movable bearing, the surface position of the transmission bolt (2) close to the bottom is provided with the first gear (3), the positions of the two sides of the top of the fixer body (1) close to the two sides are provided with a fixed ring (7), the fixed ring (7) and the inner side (7) and the transmission bolt (2) are provided with the same plane (7) and the fixed ring (7) at the same position, the center part of fly leaf (8) is equipped with the screw hole, the both sides position of screw hole is equipped with the through-hole, fly leaf (8) are connected in drive bolt (2) surface through the screw hole, be connected in gag lever post (6) surface through the through-hole, fixer main part (1) one side is equipped with fixed sleeve (37), inside through-connection of fixed sleeve (37) has transfer line (5), the inboard end of transfer line (5) is connected with second gear (4), and second gear (4) and first gear (3) intermeshing, be connected with crank (12) on the outside end of transfer line (5), the top swing joint of fixed sleeve (37) has fourth fixing bolt (38), the top of fixer main part (1) has inlayed inflatable bag (13), be equipped with inflation inlet (14) on inflatable bag (13), inflation inlet (14) are worn out from fixer main part (1) openly, fixer main part (1) top both sides are equipped with second cushion (10).

2. The puncture assisting fixator for oncology department as set forth in claim 1, wherein: the movable adjusting mechanism comprises a limiting chute (15), a movable block (16), limiting blocks (25), telescopic plates (26), first fixing bolts (27), u-shaped plates (28) and second fixing bolts (29), wherein two limiting chutes (15) are formed in the back of the fixer main body (1), the movable block (16) is movably connected in the limiting chute (15) through the two limiting blocks (25) which are arranged on the front side, the telescopic plates (26) are nested in the back of the movable block (16), the first fixing bolts (27) are movably connected to the side surfaces of the movable block (16), the u-shaped plates (28) are connected to the bottom of the movable block (16), and the second fixing bolts (29) are connected to the inner threads of the u-shaped plates (28).

3. The puncture assisting fixture for oncology department as set forth in claim 2, wherein: the auxiliary puncture mechanism comprises a fixed block (17), a fixed rod (18), a first limiting plate (19), a spring (20), a movable sleeve (21), a movable connector (23), a handle (24), a second limiting plate (30) and a pushing rod (31), wherein the fixed block (17) is connected to the outer side end of the telescopic plate (26), the top of the fixed block (17) is connected with the fixed rod (18), the movable sleeve (21) is movably connected to the surface of the fixed rod (18), the second limiting plate (30) is fixedly connected to the bottom of the movable sleeve (21), the first limiting plate (19) is arranged on the surface, close to the bottom, of the fixed rod (18), the spring (20) is movably connected to the surface of the fixed rod (18) between the first limiting plate (19) and the second limiting plate (30), the movable connector (23) is connected to the top end of the fixed rod (18), the bottom of the movable connector (23) is movably connected to the center of the handle (24), and the other end of the pushing rod (31) is movably connected to the back of the movable sleeve (21).

4. A puncture assisting fixture for oncology as set forth in claim 3, wherein: the fixing mechanism comprises a transverse fixing plate (22), a vertical fixing plate (32), a supporting plate (33), a fixing sleeve ring (34), a third fixing bolt (35) and a nut (36), wherein the transverse fixing plate (22) is connected to the front face of the movable sleeve (21), the vertical fixing plate (32) is fixedly connected to the front face of the transverse fixing plate (22), the supporting plate (33) is arranged on the inner side of the vertical fixing plate (32), the fixing sleeve ring (34) is arranged on the outer side of the vertical fixing plate (32), the third fixing bolt (35) is connected to the fixing sleeve ring (34) in a penetrating mode, the nut (36) is movably connected to the surface of the third fixing bolt (35), and the nut (36) is located on the outer side of the fixing sleeve ring (34).

5. The puncture assisting fixator for oncology department as set forth in claim 1, wherein: the surface of the transmission bolt (2) is provided with threads, and the internal threads of the threaded holes arranged at the center of the movable plate (8) are matched with the threads on the surface of the transmission bolt (2).

6. The puncture assisting fixator for oncology department as set forth in claim 1, wherein: the two fixing rings (7) are arranged in total, and the fixing rings (7) are symmetrically distributed by taking the inflatable air bags (13) as axes.

7. The puncture assisting fixture for oncology department as set forth in claim 2, wherein: the length of the expansion plate (26) is longer than the radius of the groove at the top of the fixer body (1).

8. The puncture assisting fixture for oncology department as set forth in claim 2, wherein: the length of the limiting chute (15) is longer than the distance between the two fixing rings (7).

9. A puncture assisting fixture for oncology as set forth in claim 3, wherein: the length of the first limiting plate (19) and the second limiting plate (30) is larger than the diameter length of the spring (20).

10. The puncture assisting fixator for oncology department as set forth in claim 4, wherein: the support plates (33) are arranged in two, the support plates (33) are distributed in an axisymmetric mode by taking the transverse fixing plates (22) as axisymmetric mode and form a triangular structure together with the vertical fixing plates (32), at least two fixing lantern rings (34) are arranged in a sharing mode, the outer side faces of the vertical fixing plates (32) are evenly arranged, and rubber pads are arranged on the inner sides of the fixing lantern rings (34).