TWI495449B - Myoma-excising device - Google Patents

Description

Myomectomy device

The present invention relates to a surgical instrument, and more particularly to a fibroidectomy device for removing a fibroid.

When the muscle cells of human organs or their connective tissue cells proliferate abnormally, nodules are often formed. After a period of development and growth, the nodules often become larger fibroids, which affects the normal function of the organ or surrounding organs; In other words, the clinically common fibroids are uterine fibroids (Myoma), and because uterine fibroids are the most common type of tumor disease in women, hysterectomy has been classified as caesarean section in Taiwan, including Taiwan. The most common gynecological surgery program outside surgery, and the main reason for the implementation of hysterectomy is uterine fibroids.

Referring to Fig. 1, a fibroidectomy device 9 disclosed in the "Surgical Resection Device" patent of the Japanese Patent Publication No. 201223495, the conventional myomectomy device 9 includes a base 91 and an outer tube 92. A guiding rod 93 and a power source 94. An accommodating space 911 is disposed in the pedestal 91. The outer end of the outer tube 92 is fixed to the pedestal 91 through a locking ring 921. The outer tube 92 communicates with the accommodating space 911. In the outer tube 92, a cutting portion 931 and a joint portion 932 are respectively disposed at two ends of the guiding rod 93. The cutting portion 931 protrudes from one end of the outer tube 92, and the cutting portion 931 and the joint portion 932 A guiding portion 933 is formed therebetween; the power source 94 is coupled to the base 91 and is in contact with the engaging portion 932 of the guiding rod 93 to drive the guiding rod 93 to rotate.

According to the foregoing structure, the conventional myomectomy device 9 can cut the fibroid by the cutting portion 931 of the guiding rod 93, and guide the fibroid fragments to the base by the guiding portion 933 of the guiding rod 93. The accommodation space 911 of the seat 91 is collected or excluded; therefore, the conventional myomectomy device 9 can remove the fibroid fragments and excrete the fibroid fragments, thereby achieving a one-time surgical operation step, which can be greatly reduced. The operation time reduces the blood flow of the patient and improves the safety of the operation.

However, the conventional myomectomy device 9 is provided with the guiding rod 93, which increases the weight of the front end of the fibroid resection device 9 (ie, the sputum penetrates into the patient's body), thereby affecting the fibroidectomy. The operational flexibility of the device 9 makes the fibroidectomy device 9 less susceptible to precise handling. In addition, the conventional myomectomy device 9 is further blocked by the guiding rod 93, so that the inside of the outer tube 92 is not easy to clean; in operation, the locking ring 921 needs to be loosened, and the outer tube 92 and The guide rods 93 are detached from the base 91 for cleaning work.

Furthermore, since the cutting portion 931 is directly exposed to one end of the outer tube 92 to cut the fibroid, and the bare cutting portion 931 is formed, it is easy to penetrate the outer tube 92 into the patient. The cutting to the site other than the affected part makes the use of the conventional myomectomy device 9 safe.

For the above reasons, the conventional myomectomy device does have the need to improve.

The main object of the present invention is to provide a myomectomy device which can reduce the weight of the front end of the myomectomy device to improve the flexibility of operation.

A second object of the present invention is to provide a fibroidectomy device which is easy to clean.

Another object of the present invention is to provide a fibroidectomy device which can prevent the blade from contacting the non-contaminated portion to improve the safety of use.

In order to achieve the foregoing object, the technical content of the present invention includes: a fibroidectomy device comprising: a base having an accommodation space therein, the base being provided with a first opening and a second opening a transmission assembly is disposed in the accommodating space; an inner tube is coupled to the transmission assembly and protrudes out of the first opening and the second opening of the base, and one end of the inner tube is provided with a cutting portion The cutting portion is opposite to the first opening, and the other end of the inner tube forms a chip discharging hole, and the chip discharging hole is opposite to the second opening, and a guiding portion is formed between the cutting portion and the chip removing hole The inner peripheral wall of the guiding section is provided with a guiding groove; a power source is connected to the transmission component; and an outer tube is sleeved on the inner tube, and one end of the outer tube is connected to the base by a telescopic control component Blocking and controlling the displacement of the outer tube relative to the inner tube; wherein the transmission assembly comprises a clamping tube, a positioning tube and a gear set, the clamping tube is sleeved on the outer circumferential surface of the inner tube, and one end of the clamping tube is disposed There is an enlarged diameter portion that increases the outer diameter toward the end, and the other end passes through the second opening of the base and is combined a retracting member, one end of the positioning tube is provided with a reaming portion that increases the inner diameter toward the end portion, the reaming portion is matched with the enlarged diameter portion of the clamping tube, and the positioning tube fits the outer circumferential surface of the clamping tube, The other end of the positioning tube passes through the second opening of the base and is abutted by the abutting member. The positioning tube is connected to the gear set, and the gear set is connected to the power source.

Wherein, the power source is disposed in the accommodating space and has a power output end, the gear set includes a first bevel gear and a second bevel gear, the first The bevel gear is sleeved on the outer circumference of the positioning tube, and the second bevel gear is connected to the power output end of the power source, and the first bevel gear and the second bevel gear mesh with each other.

The telescopic control assembly includes an adjustment disc and a limit disc. The outer tube is coupled to the adjustment disc, and the limit disc abuts against the adjustment disc and is coupled to the base.

Wherein, one end of the outer tube is provided with an external thread, one end of the adjusting plate is provided with an outer flange, and the outer peripheral surface of the other end of the adjusting plate is provided with a holding portion, and the adjusting plate is adjacent to the inner peripheral wall of the holding portion The inner tube is externally threaded, and the inner wall of the limiting plate is provided with a convex ring. The convex ring abuts against the outer flange of the adjusting plate, and the limiting plate is separately provided. There are several joints to bond to the base.

Wherein, the cutting portion of the inner tube is formed by a set of replaceable cutter heads connected to one end of the guiding portion of the inner tube.

Wherein one end of the replaceable cutter head forms a blade portion, the blade portion includes an edge of the replaceable cutter head and at least one blade disposed on an inner peripheral wall of the replaceable cutter head, the replaceable cutter head The other end is provided with a joint portion, and one end of the guide portion of the inner tube is provided with a corresponding joint portion, and the joint portion of the replaceable cutter head is combined with the joint portion of the inner tube.

Wherein, the number of blades of the replaceable cutter head is a single piece, and the single blade edge is a flat knife or a spiral knife. Alternatively, the number of blades of the replaceable cutter head is a plurality of blades, the plurality of blades being in the form of an equiangular distribution.

Wherein, the cutting portion of the inner tube integrally connects the guiding portion of the inner tube, and the cutting portion includes an end edge of the inner tube and at least one cutting edge bent into the inner tube.

Wherein, the number of the cutting edges is a plurality of pieces, and the plurality of cutting edges are spiral arrangement.

Wherein, the guiding groove of the guiding section is a spiral groove; further, the pitch of the spiral groove may be 5 mm to 20 mm.

The above and other objects, features and advantages of the present invention will become more <RTIgt; An exploded perspective view of a preferred embodiment of the myomectomy device of the present invention is disclosed. In the present embodiment, the fibroidectomy device includes a base 1, a transmission assembly 2, an inner tube 3, a power source 4, and a Outer tube 5. The base 1 is connected to and accommodates the transmission assembly 2, the inner tube 3 and the power source 4, and the outer tube 5 is sleeved outside the inner tube 3. The inner tube 3 is connected to the transmission assembly 2, and the transmission The component 2 is connected to the power source 4, and the fibroidectomy device can drive the transmission component 2 by the power source 4, and rotate the inner tube 3 to cut the fibroids.

An accommodating space 11 is disposed in the pedestal 1 for accommodating a plurality of components. In the embodiment, the accommodating space 11 substantially accommodates the transmission component 2 and the power source 4, and is convenient for holding And controlling the fibroidectomy device, in the arrangement of the arrangement space, the transmission component 2 for clamping the inner tube 3 can be disposed in the upper half of the accommodating space 11, and the power source 4 is disposed on the The lower half of the accommodation space 11 is. Moreover, the pedestal 1 is further provided with a first opening 12 and a second opening 13 for the inner tube 3 to extend, so that the accommodating space 11 can communicate with the outside.

Please refer to Figure 3, the transmission component 2 is used to transmit the power. The power of the source 4 is to drive the inner tube 3 to rotate. In this embodiment, the transmission assembly 2 includes a clamping tube 21 for fitting the outer circumferential surface of the inner tube 3, and one end of the clamping tube 21 is provided with an increasing outer diameter toward the end portion. The other end of the hole 211 passes through the second opening 13 of the base 1 and is coupled to a pressing member 22; wherein the clamping tube 21 and the abutting member 22 are selectively coupled to each other by screwing. The tube 21 is provided with an external thread, and an internal thread is disposed on the abutting member 22, so that the abutting member 22 can be firmly coupled to the pinch tube 21 and has a function of adjusting the relative position between the two. A positioning tube 23 is further sleeved on the outer peripheral surface of the pinch tube 21. One end of the positioning tube 23 is provided with a reaming portion 231 which has an increasing inner diameter toward the end portion, and the reaming portion 231 and the enlarged diameter portion 211 of the pinch tube 21 The other end of the positioning tube 23 can pass through the second opening 13 of the base 1 for the abutting member 22 to abut.

The transmission assembly 2 is further provided with at least one bearing 24. In this embodiment, the number of the bearings 24 is selected to be two, and the two bearings 24 are fixed in the accommodating space 11 for the positioning tube 23 to wear. And a pair of bearings 24 are located adjacent to the reaming portion 231 of the positioning tube 23, and another bearing 24 is located adjacent to the other end of the positioning tube 23, so that the positioning tube 23 can be stably located in the capacity A rotation is generated in the space 11.

In addition, the positioning tube 23 can be connected to the power source 4 by a gear set 25, and the gear set 25 can select corresponding components according to different transmission requirements, which can be understood by those skilled in the art; for example, since this embodiment is The power source 4 is disposed at the bottom end of the transmission component 2 such that the power source 4 and the inner tube 3 are orthogonal to each other. Therefore, the gear set 25 can optionally include a first bevel gear 251 and a first Two bevel gears 252, the first bevel gears 251 are sleeved on the outer circumferential surface of the positioning tube 23, and the second bevel gears 252 are connected to the movement The force source 4, and the first bevel gear 251 and the second bevel gear 252 mesh with each other.

One end of the inner tube 3 is provided with a cutting portion 31 for cutting the fibroids, and the other end is formed with a chip discharging hole 32. A guiding portion 33 is formed between the cutting portion 31 and the chip discharging hole 32, and the guiding portion is formed. The inner peripheral wall of the segment 33 is provided with a guiding groove 331 for guiding the fibroid fragments cut by the cutting portion 31 to be discharged from the chip discharging hole 32. The inner tube 3 extends through the pinch tube 21 of the transmission assembly 2 and protrudes out of the first opening 12 and the second opening 13 of the base 1. The cutting portion 31 of the inner tube 3 and the first opening The hole 12 is opposite to the second hole 13; the rotation member 22 is rotated to abut the end of the positioning tube 23, and the pulling member 22 is pulled. The pinch tube 21 is moved toward the chip evacuation hole 32, so that the enlarged diameter portion 211 of the pinch tube 21 is tightly bundled by the reaming portion 231 of the positioning tube 23, so that the pinch tube 21 is radially contracted to clamp the pinch tube 21 The inner tube 3 is such that the inner tube 3 can be stably connected to the pinch tube 21.

Referring to FIG. 2 again, in the embodiment, the cutting portion 31 of the inner tube 3 may be formed by assembling a replaceable cutter head 6 to one end of the guiding portion 33 of the inner tube 3; One end of the replaceable cutter head 6 forms a blade portion 61. The blade portion 61 includes an end edge 611 of the replaceable cutter head 6 and at least one blade edge 612 disposed on an inner peripheral wall of the replaceable cutter head 6. The other end of the replacement cutter head 6 is provided with a joint portion 62 (for example, an external thread), and one end of the guide portion 33 of the inner tube 3 is provided with a corresponding joint portion 332 (for example, an internal thread), so that the replaceable knife is provided. The head 6 can be quickly joined by the joint portion 62 to the joint portion 332 of the guide portion 33 to form the cutting portion 31 of the inner tube 3.

In this way, the embodiment can provide the replaceable cutter head 6 so that each of the replaceable cutter heads 6 does not need to have a long guiding section 33, so that the inner tube can be effectively reduced. 3 the cost of the cutting portion 31, and the When the cutting portion 31 is damaged or passivated, it is only necessary to replace the new replaceable cutter head 6, and it is not necessary to replace the entire inner tube 3, thereby avoiding unnecessary waste and having cost-saving effect. Wherein, when the number of the cutting edges 612 provided on the inner peripheral wall of the replaceable cutter head 6 is a single piece, the single piece cutting edge 612 may be a flat knife as shown in FIG. 2 or a spiral as shown in FIG. a knife or the like; when the number of the cutting edges 612 provided on the inner peripheral wall of the replaceable cutter head 6 is a plurality of pieces, the plurality of cutting edges 612 are preferably in the form of a rounded distribution to control the cut fibroid fragments. Has a size that is about the size.

On the other hand, please refer to FIG. 3 again. In this embodiment, the chip evacuation hole 32 of the inner tube 3 can be connected to a collector (not shown) to collect the fibroid fragments cut during the operation. It can even be used with a suction source to create a negative pressure on the collector to speed up the collection of fibroid fragments. The guiding groove 331 of the guiding section 33 may be a spiral groove with a large lead (for example, a pitch of 5 mm to 20 mm) for assisting the guiding of the flow of the fibroid fragments with the inner tube 3 during the operation. The chip evacuation hole 32 prevents the accumulation of fibroid fragments from being clogged in the inner tube 3.

The power source 4 can be selected as a generally common motor. The power source 4 has a power output end 41. The power output end 41 is connected to the second bevel gear 252 of the transmission assembly 2 for transmitting when the power source 4 is actuated. The power output end 41 drives the second bevel gear 252 to rotate to drive the first bevel gear 251 to rotate, thereby synchronously interlocking the positioning tube 23, the pinch tube 21 and the inner tube 3 to rotate.

Please refer to FIGS. 2 and 3 at the same time. The outer tube 5 is sleeved on the portion of the inner tube 3 protruding from the first opening 12, and one end of the outer tube 5 is coupled to the base through a telescopic control assembly 7. 1, and controlled by the telescopic control component 7 The outer tube 5 is displaced relative to the inner tube 3 to produce an effect of extending or retracting the cutting portion 31 of the inner tube 3 into the outer tube 5; in the embodiment, the telescopic control assembly 7 can include an adjustment The disc 71 and a limiting disc 72, the outer tube 5 is coupled to the adjusting disc 71. The limiting disc 72 abuts against the adjusting disc 71 and is coupled to the base 1 to adjust the adjusting disc by the limiting disc 72. The 71 defines an axial limit, but still maintains the adjustment disk 71 rotatable relative to the base 1, thereby controlling the outer tube 5 to be axially displaced relative to the inner tube 3.

More specifically, in this embodiment, one end of the outer tube 5 may be provided with an external thread 51. One end of the adjusting plate 71 is provided with an outer flange 711, and the outer peripheral surface of the other end of the adjusting plate 71 is provided with a grip. The inner peripheral wall of the outer surface of the inner surface of the inner surface of the inner surface of the inner surface of the outer surface of the outer surface of the outer surface of the outer surface of the outer surface of the outer surface of the outer surface of the outer surface of the outer surface The protruding ring 721 can be abutted against the flange 711 of the adjusting plate 71. The limiting plate 72 is further provided with a plurality of joint portions 722. The plurality of joint portions 722 can be, for example, a plurality of holes, such as by a plurality of holes. The locking element of the screw passes through the plurality of joints 722, and the limit plate 72 is coupled to the base 1.

Accordingly, in the case where the outer tube 5 is restricted from rotating (for example, by holding the outer tube 5 by hand), the adjustment can be made by simply rotating the adjustment disk 71 of the telescopic control unit 7. The internal thread 713 of the disc 71 rotates relative to the external thread 51 of the outer tube 5 to adjust the relative position of the adjusting disc 71 and the outer tube 5, thereby controlling the outer tube 5 to move away from the inner tube 3 or Displaced in the direction of the base 1.

Referring to Fig. 5, the fibroidectomy device of the present invention can be applied to various types of myomectomy, and the following is an example of administration to uterine myomectomy. Before the operation, the relative position of the adjusting plate 71 and the outer tube 5 can be adjusted. The free end of the outer tube 5 can be extended beyond the cutting portion 31 of the inner tube 3 to shield the cutting portion 31 from being cut to a portion other than the affected portion during penetration of the outer tube 5 into the patient. In actual use, the operator can hold the base 1 and insert the outer tube 5 together with the inner tube 3 into the patient's uterus, and then grasp the outer tube 5 and rotate the adjustment of the telescopic control assembly 7. The disk 71 displaces the outer tube 5 rearward relative to the inner tube 3 such that the end edge of the outer tube 5 no longer shields the cutting portion 31 of the inner tube 3.

Continued by the cutting portion 31 of the inner tube 3 against the uterine fibroid to be resected, and controlling the power source 4 to start to drive the inner tube 3 to rotate at a high speed to chop the fibroid through the cutting portion 31; Referring to FIG. 6, the fibroid fragments can be introduced into the guiding section 33 of the inner tube 3 along the cutting direction of the cutting portion 31, so that the guiding groove 331 of the guiding section 33 will be The fibroid fragments are progressively directed toward the chip evacuation holes 32 for excretion. In addition, after the operation, the abutting member 22 is rotated, so that the abutting member 22 does not abut the end portion of the positioning tube 23, so that the pinch tube 21 and the inner tube 3 are loosely fitted. In order to quickly take out the inner tube 3 for cleaning work, it is very convenient to use.

Referring to FIG. 7, in another embodiment of the present invention, the cutting portion 31' of the inner tube 3' is integrally connected to the guiding portion 33' of the inner tube 3'; that is, the inner tube 3' The cutting portion 31 ′ may be formed by directly machining the end of the guiding portion 33 ′ of the inner tube 3 ′, the cutting portion 31 ′ including the end edge 311 of the inner tube 3 ′ and at least one of the inner tube 3 The middle curved blade 312, in the embodiment shown in Fig. 7, the cutting portion 31' has a plurality of blades 312, and the plurality of blades 312 are arranged in a spiral to directly rotate the inner tube 3' The fibroid is cut by the cutting portion 31', and the cutting portion 31' can be firmly coupled The end of the inner tube 3' avoids the formation of detachment when the fibroids are cut.

In summary, the fibroid resection device of the present invention can be provided directly from the inner tube by providing a cutting portion at the front end of the inner tube and fitting a guiding groove in the guiding portion of the inner tube. Cutting fibroids and deriving fibroid fragments can replace the guide rod of the conventional myomectomy device, so it can effectively reduce the weight of the front end of the fibroid resection device, improve its operational flexibility, and accurately manipulate the fibroidectomy device.

The fibroid resection device of the invention has a hollow tube shape and is easy to disassemble and is used for cutting fibroids and deriving fibroid fragments, and has the effect of improving cleaning convenience.

The fibroidectomy device of the present invention can adjust the relative position of the outer tube and the inner tube, and only the cutting portion of the inner tube protrudes from the free end of the outer tube when the cutting is to be cut, and the other portion can be maintained at the other time. The tube shields the cutting portion, not only avoids cutting to the part other than the affected part during the operation, but also avoids the foreign object hitting the cutting part of the inner tube, thereby reducing the probability of damage and passivation of the cutting part, and improving the safety of use. Sexuality and the effect of extending the life of the cutting part.

In addition, the present invention is also applicable to the removal of other closed tissues (for example, prostate tumors, external hemorrhoids, etc.), and should not be limited to the removal of uterine fibroids, as understood by those skilled in the art.

While the invention has been described in connection with the preferred embodiments described above, it is not intended to limit the scope of the invention. The technical scope of the invention is protected, and therefore the scope of the invention is defined by the scope of the appended claims.

〔this invention〕

1‧‧‧Base

11‧‧‧ accommodating space

12‧‧‧First opening

13‧‧‧Second opening

2‧‧‧Transmission components

21‧‧‧ pinch

211‧‧‧Extended section

22‧‧‧Resistance

23‧‧‧ Positioning tube

231‧‧‧ Reaming

24‧‧‧ bearing

25‧‧‧ Gear Set

251‧‧‧First bevel gear

252‧‧‧second bevel gear

3‧‧‧Inside

3’‧‧‧Inside

31‧‧‧cutting department

31'‧‧‧Department of Cutting

311‧‧‧ edge

312‧‧‧blade

32‧‧‧chip hole

33‧‧‧ guiding section

33’‧‧‧Guide section

331‧‧‧ Guide groove

332‧‧‧Combination

4‧‧‧Power source

41‧‧‧Power output

5‧‧‧External management

51‧‧‧ external thread

6‧‧‧Replaceable cutter head

61‧‧‧blade

611‧‧‧ edge

612‧‧‧blade

62‧‧‧Combination

7‧‧‧ Telescopic control components

71‧‧‧Adjustment plate

711‧‧‧ outer flange

712‧‧‧Hand turning

713‧‧‧ internal thread

72‧‧‧ Limit disk

721‧‧‧ convex ring

722‧‧‧Combination Department

[study]

9‧‧‧Fiber tumor resection device

91‧‧‧Base

911‧‧‧ accommodating space

92‧‧‧External management

921‧‧‧Lock ring

93‧‧‧Feeding rod

931‧‧‧cutting department

932‧‧‧ joints

933‧‧‧Guide

94‧‧‧Power source

Figure 1: Schematic cross-sectional view of a conventional myomectomy device.

Figure 2 is a perspective exploded view of a preferred embodiment of the present invention.

Figure 3 is a side cross-sectional view showing a preferred embodiment of the present invention.

Figure 4: A schematic view of another aspect of the replaceable cutter head of the present invention.

Figure 5 is a schematic view showing the implementation of a preferred embodiment of the present invention.

Fig. 6 is a cross-sectional view taken along line 6-6 of Fig. 5.

Figure 7 is a schematic view of an inner tube according to another embodiment of the present invention.

1‧‧‧Base

11‧‧‧ accommodating space

12‧‧‧First opening

13‧‧‧Second opening

2‧‧‧Transmission components

21‧‧‧ pinch

211‧‧‧Extended section

22‧‧‧Resistance

23‧‧‧ Positioning tube

231‧‧‧ Reaming

24‧‧‧ bearing

25‧‧‧ Gear Set

251‧‧‧First bevel gear

252‧‧‧second bevel gear

3‧‧‧Inside

31‧‧‧cutting department

32‧‧‧chip hole

33‧‧‧ guiding section

331‧‧‧ Guide groove

332‧‧‧Combination

4‧‧‧Power source

41‧‧‧Power output

5‧‧‧External management

51‧‧‧ external thread

61‧‧‧blade

611‧‧‧ edge

612‧‧‧blade

62‧‧‧Combination

7‧‧‧ Telescopic control components

71‧‧‧Adjustment plate

711‧‧‧ outer flange

712‧‧‧Hand turning

713‧‧‧ internal thread

72‧‧‧ Limit disk

721‧‧‧ convex ring

Claims (11)

A fibroidectomy device includes: a base, an accommodating space is disposed therein, the pedestal is provided with a first opening and a second opening; a transmission component is disposed in the accommodating space; an inner tube a first opening and a second opening extending into the base of the base, the one end of the inner tube is provided with a cutting portion, the cutting portion is opposite to the first opening, and the inner tube is The other end forms a chip hole, and the chip hole is opposite to the second hole. A guiding portion is formed between the cutting portion and the chip removing hole, and a guiding groove is formed on the inner peripheral wall of the guiding portion. a power source connecting the transmission component; and an outer tube sleeved on the inner tube, the one end of the outer tube being connected to the base by a telescopic control assembly and controlling the displacement of the outer tube relative to the inner tube; The transmission assembly comprises a clamping tube, a positioning tube and a gear set. The clamping tube is sleeved on the outer circumferential surface of the inner tube, and one end of the clamping tube is provided with an enlarged diameter portion which increases the outer diameter toward the end portion, and the other end is worn. Out of the second opening of the base and combined with a pressing member, one end of the positioning tube is provided with a reaming with an increasing inner diameter toward the end The reaming portion is matched with the enlarged diameter portion of the pinch tube, and the positioning tube fits the outer peripheral surface of the pinch tube, and the other end of the positioning tube passes through the second opening of the base and is provided for the abutting member Abutting, the positioning tube is connected to the gear set, and the gear set is connected to the power source. The fibroidectomy device of claim 1, wherein the power source is disposed in the accommodating space and has a power output end, and the gear set includes a first bevel gear and a second bevel gear. First bevel gear fit On a peripheral surface of the positioning tube, the second bevel gear is coupled to a power output end of the power source, and the first bevel gear and the second bevel gear mesh with each other. The fibroidectomy device of claim 1 or 2, wherein the telescopic control unit comprises an adjustment disc and a limit disc, the outer tube is coupled to the adjustment disc, and the limit disc abuts the adjustment The disk is coupled to the base. The fibroidectomy device according to claim 3, wherein one end of the outer tube is provided with an external thread, one end of the adjustment plate is provided with an outer flange, and the outer peripheral surface of the other end of the adjustment plate is provided with a grip a rotating portion, the adjusting plate is provided with an internal thread adjacent to the inner peripheral wall of the holding portion, and the outer tube is externally threaded to engage the internal thread of the adjusting plate, and the inner wall surface of the limiting plate is provided with a convex ring, and the convex ring abuts The flange is further provided with a plurality of joints for coupling to the base. A fibroidectomy device according to claim 1 or 2, wherein the cutting portion of the inner tube is formed by a set of replaceable cutter heads attached to the ends of the guide portions of the inner tube. The fibroidectomy device of claim 5, wherein one end of the replaceable cutter head forms a blade portion, the blade portion including an end edge of the replaceable cutter head and at least one of the replaceable cutter heads a cutting edge of the inner peripheral wall of the cutter head, the other end of the replaceable cutter head is provided with a joint portion, and a joint portion of the guide portion of the inner pipe is provided with a corresponding joint portion, and the joint portion of the replaceable cutter head is assembled The joint of the inner tube. The fibroidectomy device of claim 6, wherein the number of blades of the replaceable cutter head is a single piece, and the single blade edge is a flat knife or a spiral knife. The fibroidectomy device of claim 6, wherein the number of blades of the replaceable cutter head is a plurality of blades, and the plurality of blades are in the form of an equiangular distribution. The fibroidectomy device according to claim 1 or 2, wherein the cutting portion of the inner tube integrally connects the guiding portion of the inner tube, the cutting portion including the end edge of the inner tube and at least one direction The blade that is bent in the inner tube. The fibroidectomy device according to claim 9, wherein the number of the blades is a plurality of pieces, and the plurality of blades are spirally arranged. The fibroidectomy device according to claim 1 or 2, wherein the guiding groove of the guiding section is a spiral groove having a pitch of 5 mm to 20 mm.