CN209032515U - A kind of Improvement type wound pressurizing device - Google Patents

A kind of Improvement type wound pressurizing device Download PDF

Info

Publication number
CN209032515U
CN209032515U CN201820506148.6U CN201820506148U CN209032515U CN 209032515 U CN209032515 U CN 209032515U CN 201820506148 U CN201820506148 U CN 201820506148U CN 209032515 U CN209032515 U CN 209032515U
Authority
CN
China
Prior art keywords
velcro
bag
band body
hook
wound
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201820506148.6U
Other languages
Chinese (zh)
Inventor
刘发芝
张志艳
胡跃芬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201820506148.6U priority Critical patent/CN209032515U/en
Application granted granted Critical
Publication of CN209032515U publication Critical patent/CN209032515U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

The utility model relates to a kind of Improvement type wound pressurizing devices, including band body, first end and second end with body can be connected by the first velcro, and device further includes at least one bag being arranged on the first surface with body, and the opening of bag is at least partly equipped with the second velcro;First hook side of the first velcro is arranged in first surface, and the second surface with body is arranged in the first hair side of the first velcro, wherein second surface is back in first surface;Length direction of the lateral edge with body where first end with body is equipped at least one gap so that at least partly region of side is divided at least two ribbon regions where first end, and the first hook side of the first velcro is arranged in seperatedly at least two ribbon regions;Where first hair side of the first velcro is provided integrally at the second end with body on at least partly region of side.The utility model can not only be recycled, and the dynamics for adapting to the filler change pressing of thickness can be put into bag.

Description

A kind of Improvement type wound pressurizing device
Technical field
The utility model relates to medical field more particularly to a kind of Improvement type wound pressurizing devices.
Background technique
The postoperative scalpel edge of surgical operation and the wound of wound generally require the healing stage of certain time, in healing stage It is interior, abdominal belt crush injury muscle around the mouth meat is clinically generallyd use, the contraction that wound is artificial is made, to promote the healing of wound, prevent Wound is given a tongue-lashing out and bleeding.However common abdominal belt easily cause when squeezing extruding dynamics cannot concentrate, notch ambient pressure not enough, squeeze It is ineffective, to keep the healing effect of wound bad, to bringing burden on patient body.Moreover, abdominal wound disruption is outer One of the severe complication of section's abdominal operation, the abjection of serious person's internal organ, intra-abdominal contamination, leads to Organ Failure and jeopardizes life Life occurs, it is also possible to cause medical tangle.
Therefore, in the treatment and nursing process of abdominal postoperative notch, it should be specifically noted that reinforcing the prevention of disruption of wound. And abdominal postoperative is often used abdominal belt reduction notch tension, mitigates patient pain, reduces postoperative oozing of blood, promotes wound healing, and Common abdominal belt the side such as reduces pain, prevents wound dehiscence in abdominal postoperative usually as expendable consumed product and plays important Effect.
The abdominal belt of clinical use is elastic abdominal belt and traditional multi-tailed abdominal belt mostly at present.Elastic abdominal belt cloth, elastic band, Adhesive tape is made into, and use is more convenient, but unobvious to the pressure effect of local area, during sufferer is bent over or is walked It is also possible that loosening and shifting phenomena, cause pressure effect to decline.
Chinese patent CN204286623U discloses a kind of film temperature sensor for the measurement of quick response temperature, packet Substrate is included, film thermocouple is coated on the substrate, the anode of the film thermocouple is connected with cathode by hot junction;It is described Two external connection ends of film thermocouple pass through a pad respectively and connect with external lead wire;Guarantor is covered on the film thermocouple Sheath.
Chinese patent CN207280623 discloses a kind of film temperature sensor, including thermistor substrate, soft arranging wire and Electrode layer has been respectively coated in film, thermistor substrate front and back two sides, and the soft arranging wire is including two flat conductors and absolutely Edge glue-line, one end of two flat conductors are respectively welded on the electrode layer on thermistor substrate front and back two sides, institute The exposed part package for stating thermistor substrate and the flat conductor is covered with the film.
Document [1] Wang Xiaojun, Li Yibing, Zhou Jicheng sensitive Functional Films of Thin-Film Temperature Sensors [J] material Leader, 2005,19 (4): 67-70. reviews preparation method, classification, structure, the property of domestic and international sensitive Functional Films of Thin-Film Temperature Sensors Matter etc..
Document [2] security closes the development of film temperature sensor and applies [J] Push Technology, 1992,13 (1): 63- 67. disclosing a kind of film temperature sensor based on platinum rhodium thermocouple, structure, the preparation side of the sensor are specifically disclosed Method, connection type and power supply type with measuring circuit.
Utility model content
For the deficiencies of the prior art, the utility model provides a kind of Improvement type wound pressurizing device, including band body, institute Stating the first end and second end with body can be connected by the first velcro, and described device further includes that first with body is arranged in At least one bag on surface, the opening of the bag are at least partly equipped with the second velcro;The of first velcro One hook side is arranged in first surface, and the second surface with body is arranged in the first hair side of first velcro, wherein institute Second surface is stated back in the first surface;Length direction with body described in lateral edge where the first end with body is equipped with extremely A few gap is so that at least partly region of side where the first end is divided at least two ribbon regions, and described first First hook side of velcro is arranged in seperatedly on at least two ribbon regions;First hair side one of first velcro On at least partly region of side where the second end with body is set to body.By this way, the utility model not only may be used The dynamics for adapting to the filler change pressing of thickness can be put into recycle, and in bag.By this way, the utility model It can prevent exposed first hook side from causing wire drawing to the clothing of the wounded, can protect the wounded's clothing.By this way, may be used To carry out subtle adjustment to the tension dynamics on width by the first seperated hook side.Moreover, the adherency of the first hook side of part Property is also more convenient for replacing when not strong, and replacement cost is also lower.
According to a preferred embodiment, the first composition portion of the bag is made of elastic fabric, and second group of the bag It being made of at portion described a part with body, a part of edge in first composition portion is connected to the band body by suture, Another part edge in first composition portion is located at the opening of bag.By this way, the bag of the utility model compares non-stretchable The band of fabric can be packed into more fillers, and pressing effect is more preferable, and the bag for not filling filler will not take foreign matter to the wounded Sense, user experience are more preferable.
According to a preferred embodiment, in the first hair side of the first velcro and the second roughened structure of the second velcro Identical, the second hook thorn that the first hook thorn density of the first hook side of the first velcro is greater than the second hook side of the second velcro is close Degree.It is squeezed to prevent stop-band body in wounded's activity since the first velcro needs to bear larger external force, and at the second velcro It only needs simply to seal, without big external force is subjected to, therefore, by this way, the bonding force of the first velcro can be made more Securely.And the second velcro is more convenient for opening.
According to a preferred embodiment, the first end with body is arc-shaped.
According to a preferred embodiment, the surface of the bag is equipped with fold, and the first direction of the fold is parallel to institute State the line direction of first end and the second end.
According to a preferred embodiment, the first length of first hair side is with second length ratio with body 1:8~1:2.
According to a preferred embodiment, the third end with body and/or the 4th end are equipped with and are used at least the two of wiring A ring, wherein at least two ring and the interconnecting piece with body are arranged in the second surface side, also, each institute It states the surface of bag and/or is arranged right below at least one ring.
According to a preferred embodiment, when corresponding ring does not use, it can be folded and be pasted by third velcro On the second surface, moreover, the hair side of the third velcro is coated on the outer surface of the ring, the third magic The hook side sewing of patch is connected on the second surface with body.
According to a preferred embodiment, described device further includes at least one filler flexible, the filler energy It fills in the bag.
According to a preferred embodiment, in the middle part of the bag along the width direction with body be provided at least one the 4th For velcro that the bag can be divided at least two receiving areas, it is to be filled to be adapted to that the filler is divided at least two specifications Receiving area size, wherein when use, according to the size of wound area to be pressurised selection therewith size adaptation it is corresponding Thus the 4th velcro between the corresponding receiving area is simultaneously opened or is pressed by receiving area, and thus selection is adapted to specification Filler, when pressing wound, the corresponding receiving area is by the first velcro Continued depression of bonding to be pressurised At wound area.
Detailed description of the invention
Fig. 1 is the simplification schematic elevation view of a preferred embodiment of the utility model;
Fig. 2 is the module connection diagram of the utility model part building;
Fig. 3 is the simplification schematic rear view of a preferred embodiment of the utility model;
Fig. 4 is the simplification structural representation after the first end and second end connection of a preferred embodiment of the utility model Figure;With
Fig. 5 is the simplification schematic elevation view of another preferred embodiment of the utility model.
Reference signs list
1: band body 2: bag 3: filler
4: 5: the first hook side of ring, 6: the first hair side
7: the second velcro 8: film temperature sensor 9: measuring circuit
10: display module 11: 12: the four velcro of third velcro
A: first end B: second end C: third end
D: the four end M1: first surface M2: second surface
BT1: the first the BT2: the second bluetooth module of bluetooth module
Specific embodiment
1,2,3,4 and 5 pair of the utility model is described in detail with reference to the accompanying drawing.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " suitable The orientation or positional relationship of the instructions such as hour hands ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, merely to just In description the utility model and simplify description, rather than the device or element of indication or suggestion meaning there must be specific side Position is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include one or more of the features.The meaning of " plurality " is two or two in the description of the present invention, More than, unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected;It can To be mechanical connection, it is also possible to be electrically connected;It can be directly connected, can also can be indirectly connected through an intermediary Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be Concrete meaning in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature the "upper" of second feature or it "lower" may include that the first and second features directly contact, and also may include that the first and second features are not direct contacts but lead to Cross the other characterisation contact between them.Moreover, fisrt feature includes above the second feature " above ", " above " and " above " One feature is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.First is special Sign is directly below and diagonally below the second feature including fisrt feature under the second feature " below ", " below " and " below ", or only Indicate that first feature horizontal height is less than second feature.
Referring to Fig. 1 and Fig. 4, according to an optional embodiment, the utility model discloses a kind of Improvement type wounds to add Pressure device may include band body 1, and the first end A with body 1 can be connected with second end B by the first velcro, and device further includes setting At least one bag 2 on the first surface M1 with body 1 is set, the opening of bag 2 is at least partly equipped with the second velcro 7.It is excellent Selection of land, when binding up a wound, first surface M1 is inside.Preferably, when binding up a wound, first surface M1 hurts according to direction The direction setting of mouth.Preferably, the material with body 1 can be at least one of gauze, cotton, burlap and medical sanitary cotton. It preferably, is gas permeability with body 1.Preferably, band body 1 is flexible.
According to a preferred embodiment, the first composition portion of bag 2 is made of elastic fabric, the second composition portion of bag 2 by A part with body 1 is constituted, and the part edge in the first composition portion is connected to band body 1 by way of sewing.Preferably, elastic force face Material for example can be spandex face fabric, wash at least one of bright and beautiful weft spring cloth and PBT elastic fabric.
According to a preferred embodiment, referring to fig. 2 with 3, the inner sidewall of bag 2 is equipped with film temperature sensor 8 flexible, Film temperature sensor 8 is arranged on elastic fabric, and film temperature sensor 8 is connected to measuring circuit 9, and measuring circuit 9 connects In display module 10.By this way, the utility model can the case where not dismantling band body real-time measurement wound temperature, allow doctor Shield personnel can have found the abnormal temperature situation of wound in time, to find wound sense in time in the case where not touching wound Dye will not lead to wound rupture because of band body is dismantled when measurement.Preferably, film temperature sensor 8 can be platinum film temperature Sensor or flexibility NTC temperature sensor.Preferably, the principle of temperature measurement is to utilize the gold in platinum film temperature sensor Belong to Pt thin film thermal resistors as temperature-sensing element, when the temperature is changed, the resistance value of metal Pt thin film thermal resistors will change, And voltage signal is converted to, measuring circuit collects voltage signal, then calculates corresponding temperature information according to voltage signal. Preferably, measuring circuit can use the ADS1147 chip or ADS1247 chip of TI company.
According to a preferred embodiment, measuring circuit 9 by the first bluetooth module BT1 and the second bluetooth module BT2 without Line is connected to display module 10.Preferably, measuring circuit 9 is hardware module, such as can be and can be used to handle data and/or biography In the specific integrated circuit (ASIC) of transmission of data, FPGA, CPU, general purpose computer or any other hardware equivalents at least It is a kind of.Preferably, which further includes power supply, which can be measuring circuit, display module, the first bluetooth module and second The power supply of at least one of bluetooth module.Especially preferably, which is rechargeable battery.
According to a preferred embodiment, referring to the first hook side 5 setting of the first velcro in first surface M1, first The second surface M2 with body 1 is arranged in first hair side 6 of velcro, wherein second surface M2 is back in first surface M1.
According to a preferred embodiment, length direction of the lateral edge with body 1 where the first end A with body 1 is equipped at least one Gap is so that at least partly region of side where first end A is divided at least two ribbon regions, and the of the first velcro One hook side 5 is arranged in seperatedly at least two ribbon regions;First hair side 6 of the first velcro is provided integrally at band body 1 Second end B where side at least partly region on.
According to a preferred embodiment, the first length of the first hair side 6 and the second length ratio with body 1 be 1:8~ 1:2。
According to a preferred embodiment, third end C and/or the 4th end D with body 1 are equipped at least two for wiring Ring 4.
According to a preferred embodiment, at least two rings 4 are arranged with the interconnecting piece with body 1 in the side second surface M2.
According to a preferred embodiment, the first bonding force of the first velcro is greater than the second bonding of the second velcro Power.Preferably, identical as the second roughened structure of the second velcro in the first hair side 6 of the first velcro, the first velcro The second hook for the second hook side that the first hook thorn density of first hook side 5 is greater than the second velcro pierces density.
According to a preferred embodiment, which can also include at least one filler 3 flexible, 3 energy of filler It fills in bag 2.Preferably, filler 3 can be at least one of gauze, cotton, foam and sponge.
According to an optional embodiment, a kind of Improvement type wound pressurizing device may include band body 1, and the with body 1 One end A can be connected with second end B by the first velcro.Device can also include being arranged on the first surface M1 with body 1 At least one bag 2, the opening of bag 2 are at least partly equipped with the second velcro 7;The first hook side 5 setting of first velcro exists The second surface M2 with body 1 is arranged in the first hair side 6 of first surface M1, the first velcro.Second surface M2 is back in first Surface M1;Length direction of the lateral edge with body 1 where first end A with body 1 is equipped at least one gap so where first end A At least partly region of side is divided at least two ribbon regions, the first hook side 5 of the first velcro be arranged in seperatedly to On few two ribbon regions;Side where first hair side 6 of the first velcro is provided integrally at the second end B with body 1 is at least On partial region.
According to a preferred embodiment, the first end A with body 1 can be arc-shaped.
According to a preferred embodiment, the surface of bag 2 is equipped with fold, the first direction of fold be parallel to first end A and The line direction of second end B.
According to a preferred embodiment, the surface of each bag 2 and/or it is arranged right below at least one ring 4.
According to a preferred embodiment, third end C and/or the 4th end D with body 1 are equipped at least two for wiring Ring 4, wherein at least two rings 4 are arranged with the interconnecting piece with body 1 in the side second surface M2, also, the surface of each bag 2 And/or it is arranged right below at least one ring 4.
According to a preferred embodiment, when corresponding ring 4 does not use, can be folded by third velcro 11 viscous It is affixed on second surface M2, moreover, the hair side of third velcro 11 is coated on the outer surface of ring 4, the hook of third velcro 11 Face sewing is connected on the second surface M2 with body 1.
According to a preferred embodiment, 2 middle part of bag is provided at least one the 4th velcro along the width direction with body 1 12 bag 2 can be divided at least two receiving areas, and filler 3 divides big to be adapted to receiving area to be filled at least two specifications It is small.Preferably, when use, simultaneously according to the size of the wound area to be pressurised selection corresponding receiving area that size is adapted to therewith Thus the 4th velcro 12 between corresponding receiving area is opened or is pressed, and the thus filler 3 of selection adaptation specification.It is excellent Selection of land, when pressing wound, corresponding receiving area is by the first velcro Continued depression of bonding at wound area to be pressurised. Preferably, the hook side of the 4th velcro 12 is arranged on the first component part of bag.Because hook side is harder with respect to hair side, setting exists It will cause foreign body sensation on first component part, the hook side of the 4th velcro 12 be arranged on the first component part of bag as a result, The foreign body sensation that the present apparatus is taken to the wounded can be not only reduced, but also more evenly to the pressing of wound, using effect is more preferable.
It should be noted that above-mentioned specific embodiment is exemplary, those skilled in the art can be in the utility model Various solutions are found out under the inspiration of disclosure, and these solutions also belong to the open scope of the utility model simultaneously It falls within the protection scope of the utility model.It will be understood by those skilled in the art that the utility model specification and its attached drawing It is illustrative and not constitutes limitations on claims.The protection scope of the utility model is by claim and its equivalent It limits.

Claims (10)

1. a kind of Improvement type wound pressurizing device, including band body flexible (1), the first end (A) and second end of the band body (1) (B) it can be connected by the first velcro, which is characterized in that described device further includes first surface of the setting in the band body (1) (M1) at least one bag (2) on, the opening of the bag (2) are at least partly equipped with the second velcro (7);
The first hook side (5) of first velcro is arranged in first surface (M1), the first hair side (6) of first velcro Second surface (M2) in the band body (1) is set, wherein the second surface (M2) is back in the first surface (M1);
Length direction with body (1) described in lateral edge where the first end (A) of the band body (1) is equipped at least one gap so that institute At least partly region for stating side where first end (A) is divided at least two ribbon regions, and the first of first velcro Hook side (5) is arranged in seperatedly on at least two ribbon regions;
Side where the first hair side (6) of first velcro is provided integrally at the second end (B) of the band body (1) is at least On partial region.
2. device as described in claim 1, which is characterized in that the first composition portion of the bag (2) is made of elastic fabric, institute The the second composition portion for stating bag (2) is made of a part of the band body (1), and a part of edge in first composition portion passes through seam Line is connected to the band body (1), and another part edge in first composition portion is located at the opening of bag (2).
3. device as described in claim 1, which is characterized in that the first hair side (6) of the first velcro and the second velcro Second roughened structure is identical, and the first hook thorn density of the first hook side (5) of the first velcro is greater than the second hook of the second velcro The second hook in face pierces density.
4. device as described in claim 1, which is characterized in that the first end (A) of the band body (1) is arc-shaped.
5. device as described in claim 1, which is characterized in that the surface of the bag (2) be equipped with fold, the first of the fold It is oriented parallel to the line direction of the first end (A) and the second end (B).
6. device as described in claim 1, which is characterized in that the first length of first hair side (6) and the band body (1) The second length ratio be 1: 8~1: 2.
7. device as described in claim 1, which is characterized in that the third end (C) and/or the 4th end (D) of the band body (1) are set There are at least two rings (4) for wiring, wherein the interconnecting piece of at least two ring (4) and the band body (1) is arranged in institute It states the side second surface (M2), also, the surface of each bag (2) and/or is arranged right below at least one ring (4).
8. device as claimed in claim 7, which is characterized in that when corresponding ring (4) does not use, third evil spirit can be passed through Art patch (11) is folded and is pasted on the second surface (M2), moreover, the hair side of the third velcro (11) is coated on institute The outer surface of ring (4) is stated, the hook side sewing of the third velcro (11) is connected to the second surface (M2) of the band body (1) On.
9. the device as described in one of claim 1 to 8, which is characterized in that described device further includes that at least one flexible is filled out It fills object (3), the filler (3) can be filled in the bag (2).
10. device as claimed in claim 9, which is characterized in that along the width direction of the band body (1) in the middle part of the bag (2) At least one the 4th velcro (12) is provided with so that the bag (2) can be divided at least two receiving areas, the filler (3) It is divided at least two specifications to be adapted to receiving area size to be filled,
Wherein, when use, simultaneously according to the size of the wound area to be pressurised selection corresponding receiving area that size is adapted to therewith Thus the 4th velcro (12) between the corresponding receiving area is opened or is pressed, and the thus filling of selection adaptation specification Object (3), when pressing wound, the corresponding receiving area is by the first velcro Continued depression of bonding in wound to be pressurised At the domain of mouth region.
CN201820506148.6U 2018-04-11 2018-04-11 A kind of Improvement type wound pressurizing device Expired - Fee Related CN209032515U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820506148.6U CN209032515U (en) 2018-04-11 2018-04-11 A kind of Improvement type wound pressurizing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820506148.6U CN209032515U (en) 2018-04-11 2018-04-11 A kind of Improvement type wound pressurizing device

Publications (1)

Publication Number Publication Date
CN209032515U true CN209032515U (en) 2019-06-28

Family

ID=67028011

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201820506148.6U Expired - Fee Related CN209032515U (en) 2018-04-11 2018-04-11 A kind of Improvement type wound pressurizing device

Country Status (1)

Country Link
CN (1) CN209032515U (en)

Similar Documents

Publication Publication Date Title
US11330984B2 (en) Wearable graphene sensors
CN209032515U (en) A kind of Improvement type wound pressurizing device
CN209623906U (en) A kind of intelligent thermometer wearing mechanism
CN207627366U (en) A kind of multi-functional surgical hemostasis device
JPH04504900A (en) Control device for liquid containers made of flexible materials
CN213188271U (en) Physical sign monitoring scarf
CN111248974A (en) Cuff and sphygmomanometer
CN216221944U (en) Hernia patient scrotum supporting and compression hemostasis device
CN212592103U (en) Cuff and sphygmomanometer
CN218220445U (en) Pressure monitoring protective sleeve for skull defect
CN113662523A (en) Novel sphygmomanometer cuff
CN212788475U (en) Disposable armpit temperature probe fixing device
CN218458224U (en) Abdominal belt suitable for postoperation of laparotomy
CN217430004U (en) Wearable pressure injury multi-parameter monitoring system
CN217744376U (en) Noninvasive pressure-measuring inflatable cuff and liner thereof
CN215937910U (en) Skin soft tissue auxiliary device that defervesces
US20220280101A1 (en) Wireless pressure-sensor integrated smart bandage
CN216135882U (en) Infrared detector for internal fistula blood flow
CN211797178U (en) Practical clinical subsides of bringing down a fever of paediatrics
CN216456516U (en) Thermoelectric treatment device for transdermal drug delivery of knee joints
CN217609709U (en) Multifunctional cap for premature infant
CN220676410U (en) Plaster convenient for neck and shoulder use
CN214967731U (en) Caesarean section is with applying medicine constraint area
CN216221969U (en) Cooling dressing for burn department
CN219895735U (en) Wireless finger pulse oxygen monitoring device

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20190628

Termination date: 20210411

CF01 Termination of patent right due to non-payment of annual fee